An electrical connector includes a housing formed of a fixed housing and a movable housing movable relative to the fixed housing. The connector further includes a terminal. The terminal includes a connecting portion to be connected to the electrical circuit board and a contact portion to be contacted with the mating connecting member. The terminal further includes a fixed side held portion, a movable side held portion, and an elastic portion. The connecting structure further includes a regulating portion for regulating the elastic portion from elastically deforming within a specific elastic deformation range. The elastic portion is configured to have a specific elastic deformation range. When the electrical connector is connected to the mating connecting member, the spring force is smaller than a holding force between the contact portion of the terminal and the mating connecting member in a direction that the electrical connector is pulled out.