Based on the theory of self-control,this study takes 354 employees as samples and discusses whether performance pressure leads to workplace deceit through ego depletion on employee and investigates the mediating role of benevolent leadership. The research finds that: there is a significant positive co-relation between performance pressure and workplace deceit which happens through employees’ ego depletion; benevolent leadership positively moderates the relationship between performance pressure and ego depletion as well as the mediating effect of ego depletion on both performance pressure and workplace deceit. These conclusions help to reveal the internal mechanism and boundary condition of workplace deceit and the potential negative impacts of benevolent leadership.