diff --git a/build/gb28181_server/CatalogParser.o b/build/gb28181_server/CatalogParser.o
deleted file mode 100644
index 7739e80..0000000
--- a/build/gb28181_server/CatalogParser.o
+++ /dev/null
diff --git a/build/gb28181_server/GBMessage.o b/build/gb28181_server/GBMessage.o
deleted file mode 100644
index 7005310..0000000
--- a/build/gb28181_server/GBMessage.o
+++ /dev/null
diff --git a/build/gb28181_server/HTTPDigest.o b/build/gb28181_server/HTTPDigest.o
deleted file mode 100644
index 0d8d7cf..0000000
--- a/build/gb28181_server/HTTPDigest.o
+++ /dev/null
diff --git a/build/gb28181_server/MD5.o b/build/gb28181_server/MD5.o
deleted file mode 100644
index e6e0efb..0000000
--- a/build/gb28181_server/MD5.o
+++ /dev/null
diff --git a/build/gb28181_server/Makefile b/build/gb28181_server/Makefile
index 999c705..196816c 100755
--- a/build/gb28181_server/Makefile
+++ b/build/gb28181_server/Makefile
@@ -63,3 +63,6 @@ $(TARGET):$(OBJS)
 
 clean:
 	rm -f *.o $(TARGET)
+
+cleano:
+	rm -f *.o
\ No newline at end of file
diff --git a/build/gb28181_server/SipServer.o b/build/gb28181_server/SipServer.o
deleted file mode 100644
index 595db67..0000000
--- a/build/gb28181_server/SipServer.o
+++ /dev/null
diff --git a/build/gb28181_server/WebSocketServer.o b/build/gb28181_server/WebSocketServer.o
deleted file mode 100644
index 18cf855..0000000
--- a/build/gb28181_server/WebSocketServer.o
+++ /dev/null
diff --git a/build/gb28181_server/main.o b/build/gb28181_server/main.o
deleted file mode 100644
index c26ee94..0000000
--- a/build/gb28181_server/main.o
+++ /dev/null
diff --git a/build/gb28181_server/tinyxml2.o b/build/gb28181_server/tinyxml2.o
deleted file mode 100644
index 461e111..0000000
--- a/build/gb28181_server/tinyxml2.o
+++ /dev/null