Jian carp (Cyprinus carpio var. jian) developed by comprehensive breeding technique was a new variety with greyish，good fingue，strong disease resistance and delicious taste. The variety grew fast and expressed excellent hereditary properties in aquaculture. The individual and group weight gaines of the Jian carp were higher than Hebao red carp (Cyprinus carpio var. wuyunensis) by 141. 55-250. 82%and 154. 41-256. 70%， Yuangkiang carp (Cyprinus carpio yuankiang) by 80. 46-96. 71%and 93. 30-100. 38%，and Heyuang carp(Cyprinus carpio var. wuyunensis♀X C. carpio yuankiang )by 40. 34-42. 53%and 42. 08-44. 57%，respectively. Jian carp could attain the market size within one year and its growth rate was higher than other common carp by 30% too. As the stability and identity of main hereditary properties for Jian carp had reached above 99%，this new variety was able to self-reproduction. The LDH and EST of Jian carp had its particular biochemical hereditary properties and stability.