Hard bumps on the face may be associated with diseases such as flat warts, age spots, folliculitis, and acne. Flat warts are a disease that develops when the skin is infected with the human papillomavirus. In clinical practice, they appear as small, flat pimples that protrude slightly from the skin surface, and the surface of the lesions is rough. Age spots, also known as seborrheic keratosis, the reason for the formation of the skin aging, but also with heredity, ultraviolet radiation and other factors related to the main manifestations of the skin surface of the brown or light brown, the border is clear flat plaque. Folliculitis is an acute inflammatory disease of the hair follicle and its surrounding tissues after infection with pathogens, mainly manifested as pimples and pustules centered on the hair follicle, accompanied by redness, swelling and pain. Acne is a skin disease caused by multiple factors such as hypersecretion of androgens, excessive sebum secretion, and hyperkeratosis of the cells around the hair follicles, etc. Mild cases of patients with pimples and inflammatory papules as the main manifestations, and severe cases of pustules, nodules and cysts as the main manifestations, which can be manifested as hard bumps on the face. The different causes of hard lumps on the face, its clinical manifestations also have certain differences, it is recommended that patients go to the regular hospital in a timely manner to clarify the diagnosis, under the guidance of the doctor to formulate an individualized treatment plan.