Abstract: 【Objective】 To determine the physiological characteristics of main plants and leaves of 10 different tomato germplasm by drip irrigation with saline at the flowering stage and screen out excellent salt-tolerant germplasm with a view to providing reference for the improvement of excellent salt-tolerant new varieties. 【Method】 Ten different tomato germplasm were used as test materials, and clear water drip irrigation was taken as control.The salt water (6 ms/cm) configured with NaCl was employed for salt stress treatment during the whole growth period to determine the plant height, stem thickness, relative chlorophyll content (SPAD) value, leaf malondialdehyde (MDA) content, soluble protein, superoxide dismutase (SOD), catalase (CAT) and Peroxidase (POD) activity. 【Result】 Under the stress of saline drip irrigation at flowering stage, the plant height, stem thickness and SPAD value of different tested tomato materials were reduced to varying degrees, and the soluble protein content, SOD, POD and CAT enzyme activities were increased to different degrees.The membership function method and principal component analysis method were used to comprehensively evaluate the salt tolerance of 10 different tomato germplasm, and the order from strong to weak was as follows: C₃>C₁>C₅>C₉>C₈> C₂>C₇>C₆>C₁₀>C₄. 【Conclusion】 The stress of saline drip irrigation at the flowering stage causes oxidative damage to the leaves of all the tested tomato materials, and their growth was inhibited, and they responded to salt stress through osmotic adjustment and antioxidant enzymatic systems.Different tomato materials have different sensitivity and tolerance to salt water drip irrigation.The salt resistance of the tested materials from strong to weak is: C₃>C₁>C₅>C₉>C₈>C₂>C₇>C₆>C₁₀>C₄.