A lot of small particles on the cheeks may be cornu rashes, acne, flat warts, etc., and you should consult a doctor in time to find out the cause of the disease. 1. Corns: a benign cyst of the skin, associated with skin damage and other factors, if the small particles grow on the eyelids or under the eyes, yellowish-white hard pimples, may be caused by corns. 2. Acne: when the follicle sebaceous gland chronic inflammation infection, may lead to the formation of acne, will cause the skin surface pimples or pimples, and pustules. 3. flat warts: can also be manifested as a lot of small particles on the face, is caused by the human papilloma virus infection of a local proliferation of small papules. In addition to these factors, we can not rule out that there are other reasons, we recommend that the patient timely to clarify the cause of the disease, in accordance with the doctor’s instructions for standardized treatment.