In order to evaluate the factors affecting the yield of released fishery resources and impact of their uncertainty on the amount of resources and catch, as well as on biological reference points (F_max and F_0.1), The uncertainty was introduced into the parameters about growth and mortality, and based on the developed yield per recruit (YPR) model, and the dynamics of released Chinese shrimp was simulated, and difference index was applied to evaluate the difference between based scenario and other scenarios. Four factors influencing mortality, i.e., environment change, predation, intake sea water and illegal fishing, were shown to have similar influence on resource biomass. They had greater impacts on resource reduction when the mortality was high. At the same mating death rate, the impact on catch quantity was greater when the mating occurred earlier. Contrast to scenario 1, when four factors influencing mortality are at low level and the mating death occurred later, the BPR at the beginning and end of fishing, and accumulated YPR at the end of fishing increased by 14.38%, 24.88% and 17.28%, respectively. In the absence of uncertainty, the level of mortality factors occurring before fishing did not impact the biological reference points; after the introduction of uncertainty to mortality factors and the parameters in length-weight relationship, as well as VBGF, although F_0.1 and F_max did not display the certain specific trend with the uncertainty increasing, they were possibly underestimated when the age-structure YPR model was used. And the effects of introduced uncertainty on the mean and median of biological reference points are different, the mean and median of F_max, and the median of F_0.1 did not change obviously with the uncertainty, and the max mean of F_0.1 is 3.52 times the min mean. Additionally, the C.V. F_0.1 is between 392.15% and 630.28% at the three levels of uncertainty, and then the C.V. F_max is from 24.99% to 48.48% under the same conditions. So, the better technigues were applied to improve the effect of stock Chinese shrimp fishery, and the impact of mating must be taken into consideration in formalating the fishing strategy. Compared with mean of BRP, the median has an advantage in resisting disturbance of uncertainty introduced into mortality and parameters of VBGF when stock assessment was made.