In order to restore the resources in northern coastal water of Zhejiang Province, the large-scale release had been carried out from 2013 to 2016. A total of 7835×10⁴ ind. fertilized eggs were released, and at the same time, the follow-up monitoring survey were carried out. Considering the certain point information and supplementary sample data, we estimated several indicators including growth equation and death coefficient, built the model of fishery stock assessment, finished the simulation analysis of the variation trend of fishery production and residual rate. Meanwhile, we introduced the supplementary abilities of breeding population to quantitatively evaluate the enhancement effect. The results indicate that, the released in northern area of Zhejiang Province between year 2013 to 2016, its limited body length is 138 mm, the growth parameters is -0.05237 a., the total mortality coefficient () is 1.74, the fishing mortality coefficient ( ind. fertilized eggs could receive 137.3 kg production, when still supplement 502 ind. sexually mature individuals into study area. Generally speaking, stock enhancement serves the purpose of population restoration and increases both production and income in certain degree. The model estimation analysis shows:if people could postpone the capture two month, the capture production may add 10.0%, and the growth of the sexually mature individuals will also increase 27.5%. On the other hand, if the fishing mortality coefficient could reduce to 0.76, the production may increase to 155.6 kg/a, and the proportion of sexually mature individuals may add 29.4%. Finally, we hope could put forward the suggestions about improving the effect of releasing and using the resources reasonably according to the research.