Stimulation is a fundamental means f or employers to stir up the employees' enthusiasm and creativity.Stimulation should be at a proper tim e.Belated stimulation not only coul dn' t reach stimulation purpose,but als o could cause negative effects.By con structing a game model of belated sti mulation,the article reveals the re asons that the belated effects of stimulation come into being.In the end,the paper suggests some defensive measure s in order to prevent belated stimulatio n.