In order to clarify the effect of vermicompost input on photosynthesis and yield of tomato plants cultivated indifferent continuous croppingyears，tomato was used as the tested crop and pot experiment in greenhouse with soil for tomatocontinuous cropping0，5 and 20 years wasconducted.Effects of vermicompost(VM)，chicken manure(CM)，rice straw(FS)，chemical fertilizer(CF)and without fertilizer control(CK)on plantgrowth，physiological characteristics and yieldof tomato werestudied.The results showed that the leaf physiological parameters of tomato plants treated with vermicompostin 0 and 5 years of continuous cropping soil were slightly lower than those of chicken manuretreatment，but higher than thoseof other treatments.In the soil under continuous cropping for 20 years，the transpiration rate，stomatal conductivity，net photosynthetic rate and CO₂concentration in tomato leaves were13.70%，12.38%，6.51% and 5.85% higher than those inchicken manuretreatment，respectively；compared with rice strawtreatment，it increased by56.11%，33.21%，19.80%and 16.50%，respectively；compared with chemical fertilizer treatment，it increased by 84.05%，51.68%，20.89% and42.74%，respectively.In addition to the treatment of vermicompost and chickenmanure，thebiomass，root activity and yield of the tomato cultivated in the soil for 5 years and for 20 years were lower than the corresponding treatment for0 years.The tomato yield in soil for 0 years and 5 years was 1 641 and 1 654 g·plant -1，which was slightly higher than thatof 20 years continuouscropping(1 593 g·plant -1)，but the difference was notsignificant.The biomass and root activitywere also higher than those of the soil under continuous cropping for 20years.In production，the photosynthesis of plantscan be regulated by proper input ofvermicompost，and the biomass and root activity can beincreased，so as to increase theyield oftomato.