Salt injury is one of the prominent problems cherry tomatoes suffered in protected farming.In order to provide salt-resistance breeding of cherry tomatoes with theoretical basis and references,using the two varieties "Jingdan5" and "Xiaoyuanzao" as materials,the effects of salt stress of different time on morphological index of cherry tomatoes seedlings were studied.Its main results were as follows: The leaf area is more sensitive to salt stress than shoot length and root length.The difference of tomato root length after 15 days treatment of 153 mmol/L NaCl stress could be adopted as the select index of salt-resistance.