To provide a connecting structure of a member, capable of securing a fine appearance and capable of connecting and fixing both members simply and at sufficient strength.

In an inventive member connection structure in which first and second members are connected via a connector 4, the connector 4 includes a projection 7 projecting from a fitting surface of the first member and a push-in operation part provided at the tip of the projection 7 such that it can be pushed into the projection 7. The projection 7 is expansively deformed in the radial direction by pushing in the push-in operation part. The push-in operation part is pushed into an innermost wall surface of a connector coating recessed part 25 and the projection 7 is expanded by making respective fitting surfaces of the first and second members butt against each other while receiving the projection 7 into the connector coating recessed part 25 formed in the second member. Thus, an outer peripheral surface of the expanded projection 7 engages with an inner peripheral surface of the connector coating recessed part 25 and they are prevented from coming off, thereby both of the members are fixedly connected via the connector 4 to each other.