In recent years,Rhychophorus ferrugineus（Olvier）,which belongs to Curculionidae,Coleoptera,is becoming a very serious pest on coconut. Ecological environment factors affecting its growth and development were comprehensively analyzed by combining Maxent ecological niche models with geographical information system technique and the distribution features of the host plants were taken into consideration. As a result, the relatively exact potential distribution region of R.ferrugineus all over China was obtained quantitatively and intuitively. The checked result of receiver operating characteristic（ROC） curve analysis showed that the area under curve （AUC） value of Maxent ecological niche models reached 0.958 (very close to 1), indicating that the predicted results was fairly satisfactory.