Dense small particles on both sides of the cheeks are generally considered to be keratosis pilaris, acne, cornrows and other diseases, which need to be promptly consulted for a clear diagnosis. 1. Keratosis pilaris: It is related to heredity and vitamin A deficiency, and occurs on the face, upper arms and thighs. The symptoms on the face are small bumps like goose bumps on both sides of the cheeks and localized redness of the skin to varying degrees. 2. Acne: caused by increased androgen, hypersecretion of sebum, keratinization of facial hair follicles and skin, and bacterial infection. The initial manifestation is a conical papule with a yellowish-white or black tip, which can then form an inflammatory papule, accompanied by mild pain and itching and other discomforts. 3. Corns: related to heredity, pore opening blockage, is a benign tiny cyst on the skin. It may also appear as densely packed small granules on both sides of the cheeks. There may be other reasons for the appearance of the above situation, it is recommended to go to the hospital, a clear diagnosis, symptomatic treatment.