The back of the whole body is brown-gray from the kissing end to the tail root, the sides and limbs of the body are brown-gray, the hair roots are gray-black, and the hair tips are brown or gray. The abdomen is white from the back of the lower collar to the tail root and the inside of the limbs. The back and ventral surface of the tail are brown-black, the hair roots are gray and the hair tips are brown-black. The snout, cheeks and lower protrusions are back color, but blue-gray, the ear shell is black-gray, and there is a large bunch of black tufts in winter. Individual coat colors vary greatly, such as cyan, gray, brownish gray, dark gray and dark brown. With the regional differences, the coat color also changes. For example, the coat color of Liaoning squirrels is gray, while the coat color of China southern squirrels is black. In addition, the coat color is also affected by the seasons. The coat color is gray or taupe in winter and black or dark brown in summer.