The utility model relates to a connector which comprises a junction box and two cables, wherein the junction box comprises a shell and two cable jointing clamp electric conductors; the shell is provided with a 7-shaped line-incoming chamber and a square line-outgoing chamber, and is divided by a 7-shaped insulting wall; one side surface of the shell is provided with a line-incoming port and a line-outgoing port corresponding to the line-incoming chamber and the line-outgoing chamber respectively; the two cable jointing clamp electric conductors are respectively arranged in the line-incoming chamber and the line-outgoing chamber; each cable jointing clamp electric conductor comprises an electric conductor body and a contact arranged on the electric conductor body; one end of the electric conductor body is curled into a cable terminal, and the other end with the contact is formed into an inserting and extracting end; the cable line-incoming ends of two electric conductor bodies are respectively arranged corresponding to the line-incoming port and the line-outgoing port at the side surface of the shell; and the contact on the electric conductor body in the line-incoming chamber and the contact on the electric conductor body in the line-outgoing chamber are arranged on opposite end surfaces. The junction box is compact in structure, convenient for wiring and reliable in contact.