Abstract:In order to explore the difference in quality between the cultured Chinese mitten crab in Weishan lake and Yangcheng lake，the comparison was made from four aspects：external morphology，sensory evaluation，edible part content and its conventional nutrient composition.The results showed that：1）in terms of external morphology，the length，width and body thickness of the cultured crabs in Yangcheng lake were slightly higher than those of the cultured crabs in Weishan lake，with no significant difference （P>0.05）；2）in terms of sensory score，the overall color，smell，hepatopancreas and gonad tissue structure of the cultured crabs in Yangcheng lake were all superior to those of the cultured crabs in Weishan lake，but the difference in color and smell was not significant（P>0.05），while the difference in structure tightness was significant（P<0.05）；3）in terms of the edible part content，most indicators of the cultured crabs in Yangcheng lake were better than that of the cultured crabs in Weishan lake，but the meat yield was lower than that of the cultured crabs in Weishan lake；4） as for the edible part of conventional nutrients，the protein and fat content in muscle and hepatopancreas of the cultured crabs in Yangcheng lake was higher than that of the cultured crabs in Weishan lake，and the moisture and ash content were lower than that of the cultured crabs in Weishan lake.The protein content of gonad the cultured crabs in Yangcheng lake was higher than that in Weishan lake，and the content of fat，water and ash was lower than that in Weishan lake.The results showed that the quality of the cultured crabs in Yangcheng lake was better than that of the cultured crabs in Weishan lake on the whole，but the meat yield was lower than that of the cultured crabs in Weishan lake.