In the traditional equity research,the influence of each share is balanced and gradually increases with the increase of shares.However,the company law and securities law have specific provisions for some special shareholding nodes,which obviously makes its influence not a gradual increase,but a leap.Based on the above understanding,this paper firstly uses expert scoring method to re-value the influence of some stock holding points affected by jurisprudence,and obtains the corresponding influence of stock holding.Then 353 companies listed on GEM from 2012 to 2017 are selected as research objects to study the effects of equity influence concentration,balance degree,executive shareholding influence and institutional shareholding influence on enterprise performance.The results show that the degree of equity influence concentration,executive shareholding influence and institutional shareholding influence are all significantly and positively correlated with enterprise performance.In terms of the influence of private equity investment funds,the degree of equity influence concentration,executive shareholding influence and institutional shareholding influence have a more significant and positive correlation with enterprise performance,while the balance of equity influence is contrary.