The present invention provides a socket, which includes an insulation housing, conductive silicone rubber received in the insulation housing, and a conductive plate mounted to the insulation housing. The conductive plate has an end electrically connected to the conductive silicone rubber and an opposite end extending outside the insulation housing for external electrical connection. The present invention provides a socket that comprises an insulation housing in which a block of flexible conductive silicone rubber is received and retained to allow a lead pin of a light tube to be easily inserted into the conductive silicone rubber for realizing mounting the light tube to socket to be in electrical connection with the socket. Further, the conductive silicone rubber used in the present invention shows a cushioning capability that provides protection to the light tube.