A car interior LED lamp adaptor electrical connector structure that includes a base configured and structured to match various car interior lamp socket structure configurations, wherein a female socket of an electrical connecting socket is embedded within the base, and positive and negative electrode pins protrude form a bottom portion of the female socket, which electrically connect to electrode terminals of the base of various forms, thereby fabricating an electrical connector terminal. An LED lamp board is joined to connecting wires and a male socket of an electrical connecting socket, thereby enabling the male socket to connect to a female socket of an electrical connecting socket. Then, the electrical connector terminal can be assembled and connected to a car interior lamp socket, thus forming an electrical connection and emitting of light, and thereby providing the present invention with the advantage of use with the majority of car interior lamp sockets.