Abstract: 【Objective】 To careen out the leguminous plants with less inhibitory effect on seed germination and better promoting effect on plant growth by comparing the effects of Leguminosae seed dry powder leguminous plants on seed germination and plant growth in outdoor pots with a view to provide basis for the development of green fertilizer of bitter bean. 【Methods】 With Jiashi melon as the test crop, six legumes, including Sophoraalopecuroides,Trifoliumrepens, Medicago sativa, Pisumsativum, Vignaunguiculata and Vignaradiata were selected as test materials to study the effects of different Leguminosaeseed dry powder on the germination of Jiashi melon seeds and Jiashi melon plant morphology and related physiological and biochemical indicators. 【Results】 Dry seed powders of 6 legumes had inhibitory effects on the germination of Jiashi melon seeds, among which cloverseeds had the strongest inhibitory effects and Vignaradiata seeds the weakest inhibitory effects. Sophoraalopecuroides seed powder had a higher promoting effect on the plant height, leaf area, dry weight and chlorophyll content of Jiashi melon than other legume seeds. 【Conclusion】 Compared with other leguminous plants, the dry seed powder of Sophoraalopecuroides has a better promotion effect on the plant morphology and related physiological and biochemical indexes of Jiashi melon. Therefore, in the development of Jiashi melon green manure, Sophoraalopecuroides seeds can be selected as a priority choice.