[Objective]To search the optimum fertilization of nitrogen, phosphorus and potassium for Amorphophallus konjac Fuyuan.[Method] 14 different fertilizer treatments were conducted.The effects of different treatments on the yield were researched by using potted plants and"3414" program.[Result]The yield (the largest taro weight at the time of harvest) of basal fertility treatment ① was 184.53 g, and the relative yield was only 37.99%compared with the treatment ⑥.The yield of treatment ? was the highest up to 696.20 g, and the growth coefficient was 6.94, which was 277.28% higher than that of treatment ①.The yield of treatment ④ was the lowest down to 295.00 g.and the growth coeffi-cient was 2.90, which was 59.87% higher than that of treatment ①.The effect of N, P and K fertilizers on the yield of A.konjac Fuyuan was P>K>N, and the effect of lack of phosphorus on the yield was the most obvious.There was a good interactive effect when nitrogen and phos-phorus as well as nitrogen and potassium were be collaborative applied, which could increase the yield of A.konjac Fuyuan.[Conclusion]The optimum application amount of nitrogen, phosphorus and potassium were 3 , 1 , 3 g per plant.In the field production, the nutrients will be add-ed opportunely to ensure A.konjac Fuyuan according to the actual situation of soil and the requirements of A.konjac Fuyuan on nitrogen,phos-phorus and potassium.