The effects of soil leaching and growth of lettuce in pot experiment by using three kinds of super absorbent polymers(SAP)were studied．The results indicated that:(1)Under simulated drought and no drought conditions,application of three kinds of SAP significantly reduced the volume of leaching solution and EC value and played a significant role on the retention of water and fertilizers;(2)SAP significantly improved the SPAD value of lettuce leaf,and increased aboveground fresh weight of lettuce;(3)Lettuce leaves were obviously greener compared with CK,which incdicated that the commodity character of lettuces was improved under SAP treatment;(4)Compared with the quite thick roots of CK treatment,lettuce roots were obviously more slender under SAP treatment;(5)Compared layer application with mixed application of homemade SAP,SPAD value and yield effect of the former practice were better than mixed application.Application of SAP could not only increase the lettuce yield but also improve commodity character,reduce the leaching loss and environmental hazard.Therefore,it is a kind of superior agricultural cultivation management practice.