330 accessions of common bean were employed for evaluation of drought tolerance in seedling stage. Drought stress treatments for common bean seed germination modulated using PEG6000 solution and for common bean seedlings used the method of withholding water content of soil. Eleven traits were evaluated for assessment of drought resistance, including seed germination rate, relative shoot fresh weight, relative root fresh weigh, relative water content, relative electrical conductivity and three chlorophyll fluorescence parameters. Comprehensive assessment of drought tolerance based on membership function and grey-relation analysis indicate that the materials have different responses to drought stress, accessions of F1863、F2973、F3992 and F3057 showed the strongest drought tolerance among all tested materials. Relative seed germination rate, relative shoot fresh weight, relative root fresh weigh, relative plant fresh weight, relative electrical conductivity and chlorophyll fluorescence parameters Fv/Fm has closely association with comprehensive drought tolerance indices, and the association degree are more than 0.8, thus could be used as comprehensive index for identification of drought resistance at the seedling stage．