The effects of wheat and faba bean intercropping on yield stability under different nitrogen or phosphorus fertilizer levels were investigated with the aim of providing theoretical basis on high and stable yields and rational fertilization of the intercropping system.Five-year field trials involving four nitrogen levels(N0:0 kg·hm-2，N1:90 kg·hm-2，N2:180 kg·hm-2 and N3:270 kg·hm-2)，three phosphorus levels(P0:0 kg·hm-2，P1:45 kg·hm-2 and P2:90 kg·hm-2)and three cropping patterns(wheat monocropping，faba bean monocropping，wheat and faba bean intercropping)were conducted to analyze the yield stability of wheat and faba bean.Results showed that compared with monocropping，the average grain yield of wheat under four nitrogen levels increased by 32.9%，26.1%，21.9% and 14.7%，and the average grain yield of wheat under three phosphorus levels increased by 16.7%，20.5% and 21.9%，respectively.Wheat and faba bean intercropping had yield advantages under different nitrogen or phosphorus levels，and the average land equivalent ratio was 1.12 and 1.10，respectively.Intercropping improved the yield stability of wheat over monocropping，while reduced the yield stability of faba bean.Appropriate application of nitrogen or phosphorus fertilizer could improve the yield stability of wheat and faba bean intercropping system.Meanwhile，intercropping increased the contribution rates of soil fertility and phosphorus fertilizer for wheat，but decreased the contribution rate of nitrogen fertilizer.Wheat and faba bean intercropping can maintain yield stability under low nitrogen(N1)or low phosphorus(P1)supply.Under the experimental conditions，wheat and faba bean intercropping has the potential to reduce the input of nitrogen and phosphorus fertilizers and maintain crop yield and its stability.