Pitted holes on the feet may be caused by factors such as keratosis pilaris, tinea pedis and plantar warts. 1. Keratosis Pilaris: If the patient suffers from keratosis pilaris, it may be a skin disease caused by bacterial infection, and the situation of pitted holes on the feet occurs. 2. Tinea pedis: when the patient has tinea pedis, it may be a skin disease caused by fungal infection, which causes pimples, vesicles between the toes and other symptoms on the patient’s feet, and the phenomenon of pitted holes on the feet occurs. 3. Plantar warts: caused by human papilloma virus infection of human skin, manifested as round papillary keratosis on the foot lesions. After the keratin is shed, there may be pitted holes on the feet. Patients with pitted holes on the feet should immediately go to the dermatology department of the hospital, after clarifying the cause of the disease, under the guidance of the doctor active treatment.