Abstract: Fendoumulyu 9 is a soybean variety with both grass and green manure, which was bred by the Institute of Economic Crops of Shanxi Academy of Agricultural Sciences through sexual hybridization and systematic breeding.Fen 0612 was used as female parent and Jindou 21 as male parent.In 2018,Fendoumulyu 9 participated in the regional test of grazing green soybeans in Shanxi Province, and the average fresh grass yield was 53.980 t·ha^-1,which increased by 5.54% compared with the control.In 2019,Fendoumulyu 9 participated in the production experiment of green manure soybean in Shanxi Province, and the average fresh grass yield was 44.834 t·ha^-1,which increased by 5.55% compared with the control.In 2020,it approved by Shanxi Crop Variety Association.Fendoumulyu 9 is semi-sprawling, and the best harvest period can be reached after 120 days of growth, and the whole growth period of spring sowing is over 145 d.This variety has a large yield of fresh grass and a long growth period, which can be used as green manure in various orchards, grasslands, rotation of cultivated land, restoration of mines, and production and planting of high-quality pasture for animal husbandry.