To improve the pertinence and scientificity of the credit management of lockage ship in the Three Gorges reach，we analyze the current status of credit management of ship passing through the Three Gorges reach,separate the indicators from the three major classifications of ship,crew and shipping company based on the credit management division of the ship declaration process,establish a fuzzy comprehensive evaluation model for lockage ship’s credit,and verify the model by the perennial lockage ship “Minheng ”.The results show that the credit score calculated by the fuzzy comprehensive evaluation model is consistent with the actual credit rating.