Abstract: In the case of interference f it, the amount of interference has significant effect on fatigue, closeness and stress corrosion of the rivet joints.So it is an impprtant problem to properly determine the amount of interference, which has been drawing close attention and efforts from the engineering design and manufacturing departments.Presently, the determination of the amount of interference is usually based on limited test results or certain empirical data and far satisfactory .To improve this situation,this paper presents a general method and a simple formula for computing the effective minimum interference as an aid to the designers and technicians.