Abstract: 2012~2017 A-share listed manufacturing enterprises as the research object,this paper studies the interaction between innovation input and cost stickiness,and analyzes the regulatory role of management capacity in the two by adding management capacity as the regulatory variable.The empirical test shows:innovation input can increase cost stickiness positively,and cost stickiness can also promote the level of enterprise innovation input to a certain extent;management ability can play a positive role in the organization, and can inhibit cost stickiness,but it can also reduce the level of innovation input due to the reason of management prudence;management ability can negatively regulate the cost stickiness of innovation input At the same time,the ability of management can also negatively adjust the cost stickiness to promote innovation investment.Further research shows that equity incentive can negatively alleviate the inhibition of management ability on innovation investment and promote the improvement of innovation investment level,but the regulation of compensation incentive is not obvious.