diff --git a/src/Common/Parser.cpp b/src/Common/Parser.cpp
index 012a3306..9c073f2c 100644
--- a/src/Common/Parser.cpp
+++ b/src/Common/Parser.cpp
@@ -20,30 +20,6 @@ using namespace toolkit;
 
 namespace mediakit {
 
-string findrSubString(const char *buf, const char *start, const char end, size_t buf_size) {
-    if (buf_size <= 0) {
-        buf_size = strlen(buf);
-    }
-    auto msg_start = buf;
-    auto msg_end = buf + buf_size;
-    size_t len = 0;
-    if (start != NULL) {
-        len = strlen(start);
-        msg_start = strstr(buf, start);
-    }
-    if (msg_start == NULL) {
-        return "";
-    }
-    msg_start += len;
-    if (end != NULL) {
-        msg_end = strrchr(msg_start, end);
-        if (msg_end == NULL) {
-            return "";
-        }
-    }
-    return string(msg_start, msg_end);
-}
-
 string findSubString(const char *buf, const char *start, const char *end, size_t buf_size) {
     if (buf_size <= 0) {
         buf_size = strlen(buf);
diff --git a/src/Common/Parser.h b/src/Common/Parser.h
index 5c10cae7..3741f4bc 100644
--- a/src/Common/Parser.h
+++ b/src/Common/Parser.h
@@ -18,7 +18,6 @@
 namespace mediakit {
 
 // 从字符串中提取子字符串
-std::string findrSubString(const char *buf, const char *start, const char end, size_t buf_size = 0);
 std::string findSubString(const char *buf, const char *start, const char *end, size_t buf_size = 0);
 // 把url解析为主机地址和端口号,兼容ipv4/ipv6/dns
 void splitUrl(const std::string &url, std::string &host, uint16_t &port);
diff --git a/src/Rtmp/RtmpPusher.cpp b/src/Rtmp/RtmpPusher.cpp
index ee7d560b..1569d30b 100644
--- a/src/Rtmp/RtmpPusher.cpp
+++ b/src/Rtmp/RtmpPusher.cpp
@@ -62,32 +62,21 @@ void RtmpPusher::onPublishResult_l(const SockException &ex, bool handshake_done)
         shutdown(SockException(Err_shutdown,"teardown"));
     }
 }
-#ifdef _MSC_VER
-//not #if defined(_WIN32) || defined(_WIN64) because we have strncasecmp in mingw
-#define strncasecmp _strnicmp
-#define strcasecmp _stricmp
-#endif
-void RtmpPusher::publish(const string &url)  {
+
+void RtmpPusher::publish(const string &url) {
     teardown();
-    string head ;
-    // rtmps rt_url head should be rtmps
-    const char *rtmp_head = "rtmp://";
-    const char *rtmps_head = "rtmps://";
-    if(0 == strncasecmp(url.c_str(), rtmp_head, strlen(rtmp_head)))
-    {
-        head = rtmp_head;
-    }
-    if(0 == strncasecmp(url.c_str(), rtmps_head, strlen(rtmps_head)))
-    {
-        head = rtmps_head;
-    }
-
-    string host_url = findSubString(url.data(), "://", "/");
-    _app = findrSubString(url.data(), (host_url + "/").data(), '/');
+    auto schema = findSubString(url.data(), nullptr, "://");
+    auto host_url = findSubString(url.data(), "://", "/");
+    _app = findSubString(url.data(), (host_url + "/").data(), "/");
     _stream_id = findSubString(url.data(), (host_url + "/" + _app + "/").data(), NULL);
-    _tc_url = head + host_url + "/" + _app;
-
-    if (!_app.size() || !_stream_id.size() || !head.size()) {
+    auto app_second = findSubString(_stream_id.data(), nullptr, "/");
+    if (!app_second.empty() && app_second.find('?') == std::string::npos) {
+        // _stream_id存在多级；不包含'?', 说明分割符'/'不是url参数的一部分
+        _app += "/" + app_second;
+        _stream_id.erase(0, app_second.size());
+    }
+    _tc_url = schema + "://" + host_url + "/" + _app;
+    if (_app.empty() || _stream_id.empty()) {
         onPublishResult_l(SockException(Err_other, "rtmp url非法"), false);
         return;
     }