Potassium is the most important cation in plant cell,which plays to the critical physiology roles on natural rubber tree.In recent years,the exploitation of ethrel simulated tapping resulted in a tremendous loss of potassium nutrient during rubber tree production.Meanwhile,the rate of potassium to total applied fertilizer is significantly reduced,and the importance of potassium is always neglected.Therefore,based on the critical physiology roles and strategic position of potassium,this review discussed the effects of potassium on growth development,nutritional physiology,latex yield and plant antistress,moreover,introduced the soil potassium condition and measures of forstering fertility in the areas of rubber plantation.Finally,this paper prospected the future research direction of potassium in rubber tree production.