By using production method, a port production efficiency index system that is more scientific is establised, and existing literatures comparison with single parameter is made up. Furthemore, the port production efficiency appraisal model has built based on DEA approach. Simultaneously, by using principal component analysis method, the problem involving excessive indexes is solved and primary factors affected by port production efficiency are explored quantitatively. Then, the model's practicability is validated by adopting 8 major ports in China including the Dalian port. Finally, the suggestions for improving the productive efficiency are proposed.