A three-dimensional shape measurement system is designed and it combines the generalized temporal phase unwrapping method and fringe pattern. Firstly, fringe patterns modulated by object surface are captured. Then, the temporal phase unwrapping method is used to get the unwrapped phase difference. Finally, the 3D profile is reconstructed according to the phase difference. The method of phase unwrapping is introduced. Experiment results shows that the system is capable of high efficiency and high precision reconstruction of object three-dimensional profile.