Abstract: A connecting structure for a lamp, which can be used to combine a lamp holder, a lamppost or a lamp base, includes a first body and a second body interconnected with the first body. Conductive connectors are correspondingly provided on connecting ends of the first body and the second body, respectively. Each conductive contactor has a first contacting terminal and a second contacting terminal peripherally provided on the circumference of the first contacting terminal, such that each conductive terminal can be electrically communicated with each other during the assembling of the first body and the second body. With this arrangement, the present invention can simplify the whole structure of the lamp, save the volume of load and greatly reduce the material and cost in conveyance.