Abstract: [Objective]The effect of different soil surface mulching on processing tomato seeds in high temperature condition was studied in this paper.[Method]The results showed that the light ratio respectively decreased to 25.97 ; and 20.15 ; by using black films and transparent film +75; shading net,the average temperature of mulched soil was always lower than 30 ℃ in daytime during germination process; after sowing six days,the seed dry matters respectively consumed to 81.85 ; and 86.16 ;,and the seeds germination reached normal level,the germination rate was 91; and 87; respectively.