Seed color of broomcorn millet germplasm is broomcorn millets' main agronomic traits. Seed color classification shows that the particle has the highest percentage of germplasm, white grain germplasm followed. But feature identificationh indicates that white grain germplasm has the biggest advantage and yellow grain germplasm follows,which suggests that grain germplasm has the highest evolution degree, but yellow grain germplasm has bigger advantage in adaptability and growth period, than the white grain germplasm. It results bigger germplasm proportion in yellow grain germplasm than the white medium in classification. The red, brown, and grey multicolor grain germplasm also have their own characteristics and play their different roles in broomcorn millet production.