Abstract: The present invention is related to a connecting structure for electronic signal transmission, having a hollow hinged body, with at least one pair of corresponding gaps arranged at two opposite sides of one end. Two gaps each accommodate respectively a hollow turning shaft, each with a channel on it. Two turning shafts are covered respectively by a bushing each with another channel also. A lengthy narrow FPC with plurality of lines is arranged in hollow hinged body, with mainframe and folding part arranged at two opposite sides of bushings in hinged body respectively. The end of FPC is inserted into and extends out from channel of two turning shafts and another channel of two bushings respectively, and thence enters into the mainframe and the folding part respectively to transmit signal with respect to each other.