The goal of this study was to investigate the effects of different potassium fertilizer varieties on yield and efficiency in processing tomato production.Under drip irrigation，the effects of potassium(K-0)，potassium chloride(K-KCl)，potassium sulfate(K-K2SO4)and potassium nitrate(K-KNO3)on the accumulation，quality，yield and economic benefits of two processing tomato varieties，HYH - 01 and Tunhe No.8 were studied.Results showed that application of potassium fertilizer extended the period of dry matter accumulation and increased the dry matter accumulation of processing tomatoes.Compared with K-0，K-KCl and K-KNO3 treatments，the period of dry matter accumulation of K-K2SO4 treatment was prolonged by 4，7，6 d and 8，3，2 d，respectively.The potassium fertilizer application significantly increased the yield by 11.72%～33.10% and benefits of processed tomatoes by 0.94～3.21 yuan per 1 yuan input of K2O.The effect of different potassium fertilizers on yield of tomato HYH-01 ranked as KCl > K2SO4 > KNO3，and Tunhe No.8 ranked as KCl > KNO3 >K2SO4.Except for some indexes of HYH-01，there was no significant difference in the quality of processing tomato varieties with different potassium fertilizers.In terms of dry matter accumulation，yield and economic benefits，KCl is a reasonable potassium fertilizer variety for increasing yield and efficiency of processing tomatoes in this region.