diff --git a/src/main/java/com/ruoyi/airline/controller/convert/AirlineMarkerControllerConvert.java b/src/main/java/com/ruoyi/airline/controller/convert/AirlineMarkerControllerConvert.java
index e08efbd..58635c9 100644
--- a/src/main/java/com/ruoyi/airline/controller/convert/AirlineMarkerControllerConvert.java
+++ b/src/main/java/com/ruoyi/airline/controller/convert/AirlineMarkerControllerConvert.java
@@ -3,11 +3,8 @@ package com.ruoyi.airline.controller.convert;
 import com.ruoyi.airline.api.domain.AirlineMarkerVO;
 import com.ruoyi.airline.service.dto.AirlineMarkerDTO;
 import com.ruoyi.common.core.utils.BaseConvert;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * 标注Controller转换类
@@ -17,8 +14,6 @@ import java.util.stream.Collectors;
  */
 public class AirlineMarkerControllerConvert extends BaseConvert<AirlineMarkerDTO, AirlineMarkerVO>
 {
-    private static final Logger log = LoggerFactory.getLogger(AirlineMarkerControllerConvert.class);
-
     private static final AirlineMarkerControllerConvert INSTANCE = new AirlineMarkerControllerConvert();
 
     private AirlineMarkerControllerConvert() {
@@ -54,20 +49,7 @@ public class AirlineMarkerControllerConvert extends BaseConvert<AirlineMarkerDTO
         vo.setColor(dto.getColor());
         vo.setIcon(dto.getIcon());
         vo.setFontSize(dto.getFontSize());
-        
-        // 转换coordinates
-        if (dto.getCoordinates() != null) {
-            vo.setCoordinates(dto.getCoordinates().stream()
-                    .map(point -> {
-                        AirlineMarkerVO.PointInfo voPoint = new AirlineMarkerVO.PointInfo();
-                        voPoint.setLatitude(point.getLatitude());
-                        voPoint.setLongitude(point.getLongitude());
-                        voPoint.setAsl(point.getAsl());
-                        return voPoint;
-                    })
-                    .collect(Collectors.toList()));
-        }
-        
+        vo.setCoordinates(dto.getCoordinates());
         vo.setDescription(dto.getDescription());
         vo.setGroupId(dto.getGroupId());
         vo.setCreateBy(dto.getCreateBy());
@@ -90,20 +72,7 @@ public class AirlineMarkerControllerConvert extends BaseConvert<AirlineMarkerDTO
         dto.setColor(vo.getColor());
         dto.setIcon(vo.getIcon());
         dto.setFontSize(vo.getFontSize());
-        
-        // 转换coordinates
-        if (vo.getCoordinates() != null) {
-            dto.setCoordinates(vo.getCoordinates().stream()
-                    .map(point -> {
-                        AirlineMarkerDTO.PointInfo dtoPoint = new AirlineMarkerDTO.PointInfo();
-                        dtoPoint.setLatitude(point.getLatitude());
-                        dtoPoint.setLongitude(point.getLongitude());
-                        dtoPoint.setAsl(point.getAsl());
-                        return dtoPoint;
-                    })
-                    .collect(Collectors.toList()));
-        }
-        
+        dto.setCoordinates(vo.getCoordinates());
         dto.setDescription(vo.getDescription());
         dto.setGroupId(vo.getGroupId());
         dto.setCreateBy(vo.getCreateBy());
@@ -112,4 +81,4 @@ public class AirlineMarkerControllerConvert extends BaseConvert<AirlineMarkerDTO
         dto.setUpdateTime(vo.getUpdateTime());
         return dto;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/com/ruoyi/airline/domain/convert/AirlineMarkerDomainConvert.java b/src/main/java/com/ruoyi/airline/domain/convert/AirlineMarkerDomainConvert.java
index 1c6e11c..f6d7fa3 100644
--- a/src/main/java/com/ruoyi/airline/domain/convert/AirlineMarkerDomainConvert.java
+++ b/src/main/java/com/ruoyi/airline/domain/convert/AirlineMarkerDomainConvert.java
@@ -1,7 +1,5 @@
 package com.ruoyi.airline.domain.convert;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.ruoyi.common.core.utils.BaseConvert;
 import com.ruoyi.airline.domain.model.AirlineMarker;
 import com.ruoyi.airline.mapper.entity.AirlineMarkerEntity;
@@ -17,7 +15,6 @@ import java.util.List;
 public class AirlineMarkerDomainConvert extends BaseConvert<AirlineMarkerEntity, AirlineMarker>
 {
     private static final AirlineMarkerDomainConvert INSTANCE = new AirlineMarkerDomainConvert();
-    private static final ObjectMapper objectMapper = new ObjectMapper();
 
     private AirlineMarkerDomainConvert() {
         super(AirlineMarkerEntity.class, AirlineMarker.class);
@@ -52,16 +49,7 @@ public class AirlineMarkerDomainConvert extends BaseConvert<AirlineMarkerEntity,
         model.setColor(entity.getColor());
         model.setIcon(entity.getIcon());
         model.setFontSize(entity.getFontSize());
-        
-        // 从JSON字符串转换为List<PointInfo>
-        if (entity.getCoordinates() != null) {
-            try {
-                model.setCoordinates(objectMapper.readValue(entity.getCoordinates(), objectMapper.getTypeFactory().constructCollectionType(List.class, AirlineMarker.PointInfo.class)));
-            } catch (JsonProcessingException e) {
-                e.printStackTrace();
-            }
-        }
-        
+        model.setCoordinates(entity.getCoordinates());
         model.setDescription(entity.getDescription());
         model.setCreateBy(entity.getCreateBy());
         model.setCreateTime(entity.getCreateTime());
@@ -84,16 +72,7 @@ public class AirlineMarkerDomainConvert extends BaseConvert<AirlineMarkerEntity,
         entity.setColor(model.getColor());
         entity.setIcon(model.getIcon());
         entity.setFontSize(model.getFontSize());
-        
-        // 从List<PointInfo>转换为JSON字符串
-        if (model.getCoordinates() != null) {
-            try {
-                entity.setCoordinates(objectMapper.writeValueAsString(model.getCoordinates()));
-            } catch (JsonProcessingException e) {
-                e.printStackTrace();
-            }
-        }
-        
+        entity.setCoordinates(model.getCoordinates());
         entity.setDescription(model.getDescription());
         entity.setCreateBy(model.getCreateBy());
         entity.setCreateTime(model.getCreateTime());
@@ -102,4 +81,4 @@ public class AirlineMarkerDomainConvert extends BaseConvert<AirlineMarkerEntity,
         entity.setRemark(model.getRemark());
         return entity;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/com/ruoyi/airline/domain/model/AirlineMarker.java b/src/main/java/com/ruoyi/airline/domain/model/AirlineMarker.java
index d48657d..8fbd177 100644
--- a/src/main/java/com/ruoyi/airline/domain/model/AirlineMarker.java
+++ b/src/main/java/com/ruoyi/airline/domain/model/AirlineMarker.java
@@ -6,8 +6,6 @@ import lombok.EqualsAndHashCode;
 import org.apache.commons.lang3.builder.ToStringBuilder;
 import org.apache.commons.lang3.builder.ToStringStyle;
 
-import java.util.List;
-
 /**
  * 标注
  *
@@ -52,9 +50,9 @@ public class AirlineMarker extends ExBaseEntity {
     private Integer fontSize;
 
     /**
-     * 经纬度，格式：[经,纬,asl高度]
+     * 坐标JSON字符串
      */
-    private List<PointInfo> coordinates;
+    private String coordinates;
 
     /**
      * 简介
@@ -66,24 +64,6 @@ public class AirlineMarker extends ExBaseEntity {
      */
     private String remark;
 
-    @Data
-    public static class PointInfo {
-        /**
-         * 纬度
-         */
-        private Double latitude;
-
-        /**
-         * 经度
-         */
-        private Double longitude;
-
-        /**
-         * 海拔高度
-         */
-        private Double asl;
-    }
-
     @Override
     public String toString() {
         return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE)
@@ -99,4 +79,4 @@ public class AirlineMarker extends ExBaseEntity {
                 .append("remark", getRemark())
                 .toString();
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/com/ruoyi/airline/service/convert/AirlineMarkerServiceConvert.java b/src/main/java/com/ruoyi/airline/service/convert/AirlineMarkerServiceConvert.java
index d21dba8..a60e6cd 100644
--- a/src/main/java/com/ruoyi/airline/service/convert/AirlineMarkerServiceConvert.java
+++ b/src/main/java/com/ruoyi/airline/service/convert/AirlineMarkerServiceConvert.java
@@ -5,7 +5,6 @@ import com.ruoyi.airline.domain.model.AirlineMarker;
 import com.ruoyi.airline.service.dto.AirlineMarkerDTO;
 
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
  * 标注Service转换类
@@ -51,20 +50,7 @@ public class AirlineMarkerServiceConvert extends BaseConvert<AirlineMarker, Airl
         dto.setColor(model.getColor());
         dto.setIcon(model.getIcon());
         dto.setFontSize(model.getFontSize());
-        
-        // 转换coordinates
-        if (model.getCoordinates() != null) {
-            dto.setCoordinates(model.getCoordinates().stream()
-                    .map(point -> {
-                        AirlineMarkerDTO.PointInfo dtoPoint = new AirlineMarkerDTO.PointInfo();
-                        dtoPoint.setLatitude(point.getLatitude());
-                        dtoPoint.setLongitude(point.getLongitude());
-                        dtoPoint.setAsl(point.getAsl());
-                        return dtoPoint;
-                    })
-                    .collect(Collectors.toList()));
-        }
-        
+        dto.setCoordinates(model.getCoordinates());
         dto.setDescription(model.getDescription());
         dto.setCreateBy(model.getCreateBy());
         dto.setCreateTime(model.getCreateTime());
@@ -86,20 +72,7 @@ public class AirlineMarkerServiceConvert extends BaseConvert<AirlineMarker, Airl
         model.setColor(dto.getColor());
         model.setIcon(dto.getIcon());
         model.setFontSize(dto.getFontSize());
-        
-        // 转换coordinates
-        if (dto.getCoordinates() != null) {
-            model.setCoordinates(dto.getCoordinates().stream()
-                    .map(point -> {
-                        AirlineMarker.PointInfo modelPoint = new AirlineMarker.PointInfo();
-                        modelPoint.setLatitude(point.getLatitude());
-                        modelPoint.setLongitude(point.getLongitude());
-                        modelPoint.setAsl(point.getAsl());
-                        return modelPoint;
-                    })
-                    .collect(Collectors.toList()));
-        }
-        
+        model.setCoordinates(dto.getCoordinates());
         model.setDescription(dto.getDescription());
         model.setCreateBy(dto.getCreateBy());
         model.setCreateTime(dto.getCreateTime());
@@ -107,4 +80,4 @@ public class AirlineMarkerServiceConvert extends BaseConvert<AirlineMarker, Airl
         model.setUpdateTime(dto.getUpdateTime());
         return model;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/com/ruoyi/airline/service/dto/AirlineMarkerDTO.java b/src/main/java/com/ruoyi/airline/service/dto/AirlineMarkerDTO.java
index 5c57139..6b294ac 100644
--- a/src/main/java/com/ruoyi/airline/service/dto/AirlineMarkerDTO.java
+++ b/src/main/java/com/ruoyi/airline/service/dto/AirlineMarkerDTO.java
@@ -6,8 +6,6 @@ import lombok.EqualsAndHashCode;
 import org.apache.commons.lang3.builder.ToStringBuilder;
 import org.apache.commons.lang3.builder.ToStringStyle;
 
-import java.util.List;
-
 /**
  * 标注表 airline_marker
  *
@@ -52,9 +50,9 @@ public class AirlineMarkerDTO extends BaseEntity {
     private Integer fontSize;
 
     /**
-     * 经纬度，格式：[经,纬,asl高度]
+     * 坐标JSON字符串
      */
-    private List<PointInfo> coordinates;
+    private String coordinates;
 
     /**
      * 简介
@@ -66,24 +64,6 @@ public class AirlineMarkerDTO extends BaseEntity {
      */
     private Long groupId;
 
-    @Data
-    public static class PointInfo {
-        /**
-         * 纬度
-         */
-        private Double latitude;
-
-        /**
-         * 经度
-         */
-        private Double longitude;
-
-        /**
-         * 海拔高度
-         */
-        private Double asl;
-    }
-
     @Override
     public String toString() {
         return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE)
diff --git a/src/main/java/com/ruoyi/airline/service/impl/AirlineMarkerGroupInfoServiceImpl.java b/src/main/java/com/ruoyi/airline/service/impl/AirlineMarkerGroupInfoServiceImpl.java
index a064ac6..76ee6c5 100644
--- a/src/main/java/com/ruoyi/airline/service/impl/AirlineMarkerGroupInfoServiceImpl.java
+++ b/src/main/java/com/ruoyi/airline/service/impl/AirlineMarkerGroupInfoServiceImpl.java
@@ -108,22 +108,35 @@ public class AirlineMarkerGroupInfoServiceImpl implements IAirlineMarkerGroupInf
     public AirlineMarkerGroupInfoDTO selectMarkersByGroupId(Long groupId) {
         AirlineMarkerGroupInfoDTO dto = new AirlineMarkerGroupInfoDTO();
         dto.setGroupId(groupId);
-        
+
         // 先获取该分组下的所有标注ID
         AirlineMarkerGroupInfo airlineMarkerGroupInfo = new AirlineMarkerGroupInfo();
         airlineMarkerGroupInfo.setGroupId(groupId);
         List<AirlineMarkerGroupInfo> airlineMarkerGroupInfos= iAirlineMarkerGroupInfoDomain.selectMarkerGroupInfoList(airlineMarkerGroupInfo);
         List<Long> markerIds = airlineMarkerGroupInfos.stream().map(AirlineMarkerGroupInfo::getMarkerId).toList();
-        
+
         if (markerIds != null && !markerIds.isEmpty()) {
+            // 建立 markerId -> groupId 的映射
+            java.util.Map<Long, Long> markerGroupMap = new java.util.HashMap<>();
+            for (AirlineMarkerGroupInfo info : airlineMarkerGroupInfos) {
+                markerGroupMap.put(info.getMarkerId(), info.getGroupId());
+            }
+
             // 根据ID列表查询标注详情
             List<AirlineMarker> markers = iAirlineMarkerDomain.selectMarkerListByIds(markerIds);
             if (markers != null && !markers.isEmpty()) {
-                List<AirlineMarkerDTO> markerDTOs = AirlineMarkerServiceConvert.fromList(markers);
+                List<AirlineMarkerDTO> markerDTOs = new java.util.ArrayList<>();
+                for (AirlineMarker marker : markers) {
+                    AirlineMarkerDTO markerDTO = AirlineMarkerServiceConvert.from(marker);
+                    if (markerGroupMap.containsKey(marker.getId())) {
+                        markerDTO.setGroupId(markerGroupMap.get(marker.getId()));
+                    }
+                    markerDTOs.add(markerDTO);
+                }
                 dto.setGroupInfos(markerDTOs);
             }
         }
-        
+
         return dto;
     }