This paper discusses the strategy selection of employee knowledge hiding, replaces the uncertain profit and loss value in the traditional payment matrix with the foreground theoretical value function, and constructs a game model for analysis. The results show that: (1) The optimal evolution of knowledge sharing can be achieved by both employees when the following two conditions are met: first, the sense of acquisition when both employees choose the state of knowledge sharing is greater than that of a single employee when they choose the state of knowledge sharing, second, the return of knowledge-sharers to knowledge-sharers is greater than their cost; (2) If any of the above conditions do not hold, additional conditions are needed to achieve the optimal evolution state, which can be solved by making the perceptual difference less than the difference between feedback and cost.