A hard lump on the tip of the little finger of the foot can be considered callus, corns, plantar warts and so on. 1. callus: the patient foot little finger head of hard bumps show wax yellow or yellow, local thickening of the plaque can be considered to be callus; this disease is due to long-term skin pressure and friction caused by excessive proliferation of the stratum corneum, often occurs in the palm of the hand, the soles of the feet and other parts of the foot (such as the bottom of the little toes); long-term wear of ill-fitting shoes, foot deformity, long-term standing or walking and other factors can induce this disease. 2. Chicken eye: the hard bumps on the toe of the little finger of the patient’s foot show yellow or yellowish border clear keratinous growths, such as the size of a soybean, and there is intense pain when standing or walking, can be considered to be corns, which often occurs in the middle of the palm of the foot in front of the middle of the small toes on the lateral side or the inner side of the thumb. The formation of this disease is mostly related to long-term pressure or mechanical stimulation of the foot skin. People who often wear ill-fitting and tight shoes, walk for a long time, and have deformed feet are also more likely to suffer from this disease. 3. metatarsal warts: if the patient patient foot little finger head of the hard pimples for the first time for small, shiny pimples, and then gradually increased to the size of soybean, the surface of the keratinization, the pressure or friction after the formation of yellowish-brown rough plaque, the surface can be appeared black spots, can be considered to be metatarsal warts. This disease is caused by human papillomavirus (HPV) infection; it often occurs in the heel, the front of the foot metatarsal or between the toes at the pressure. It is recommended that the patient go to the dermatology department of the regular hospital for a relevant examination, to clarify the cause of the disease, and then follow the doctor’s instructions to receive treatment.