Collect specimens of Twenty-four rat and mouse diets, nine rabbit diets, two dog diets and two monkey diets in China and analyze their content of moisture, ash, crude protein, crude fat and crude fiber. Only 20.8 pre cents of them are up to state standard of the rat and mouse diets. Particularly 25 pre cents in Bijing (1/4), zero in Northeast China area, North China area(0/3) and Mid-China area (0/2) 33.3 pre cents in East China (2/6), 20 pre centsin in South China (1/5), 33.3 pre cents in Southwest (1/3), 22.2 pre centsof the rabbbit diets satisfy state standard. All dog and monkey diets did not meet the demand standard.