Abstract: The design of joint area is the key to composite structures, and the determination of joint load is the critical part of a multi fastener joint problem. Based on the displacement method of FE theory, a method for determination of joint load distribution is suggested in this paper which is based on the finite super element. The difficulty of determining composite P δ curve by experiment is avoided, and at the same time this method possesses higher computational efficiency. There are no any limitations on the joint geometrical shape, dimensions, arrangement of joints, external applied loads, boundary conditions, etc. in this method. The accuracy and efficiency of this method are verified by tests and typical examples. At last, the load distribution in many cases is studied and some important conclusions have been obtained.