The effect for germination of three legume seeds was studied through serious temperature and light,soaking time and germination beds.The optimal parameters of germination of bean seed were that the temperature was from 15℃ to 25℃,germination time was 6~10 days,dark conditions were better than illumination environment,and the germination bed to paper and paper among was the best.The optimal parameters of germination of soybean seed were that the temperature was 20℃,germination time was 6 days,dark conditions were better than illumination environment,and the germination bed to yellow was the best.The optimal parameters of germination of cowpea seed were that the temperature was 15℃,germination time was 2~3 days,dark conditions were better than illumination environment,and the germination bed to yellow was the best.