In this paper,field experiments of late rice were conducted to study the effect of three CMPcompound fertilizers made of mediumlow grade phosphate rock on rice yield and phosphorus efficiency in Liuyang and Xiangyin,Hunan Province.The results showed that the average yields of the CMPcompound fertilizer treatments of late rice were 077 t/hm2higher than those of the farmers used fertilizer treatment,respectively.It was concluded that the P application increased grain yield significantly,with the yield increase rate of 91% for late rice.The per hole effective ears,per hole ears and panicle ears per hectare of the CMPcompound fertilizer treatments were also higher than those of the farmers used fertilizer treatment.The CMPcompound fertilizer could reduce the phosphate dry matter production efficiency,and increase the phosphate use efficiency 788%,phosphate agronomic efficiency 444% and phosphate use output ratio 173% than those of the farmers used fertilizer treatment.The late rice yield,yield components and phosphorus efficiency of the CMP compound fertilizer were not significant with the phosphorus made of highgrade phosphate rock.