Rope lamp and its making method

The present invention relates to a flexible rope lamp which can be series-connected and its production method. Said lamp is formed from power supply plug wire, several transparent lamp tubes and tailend plug and socket sleeve connector. On the power supply plug wire and conducting wire in the socket connected with lamp tube the current overload protection safetey fuses are connected for preventing electrical leakage. In addition to the plug-in connection of male-female pins between every two adjacent lamp tubes the end portions of butt lamp tubes are respectively equipped with male-female sockets, female socket is equipped with nut, said nut can be matched with outer threads of male socket, both are fixedly connected by means of retaining piece and stop dog, so that it protects male-female plug and socket interface, and can prevent lamp tubes from separating out.