A small ball of flesh on the finger may be caused by common warts, flat warts, granulomas and other factors. 1. Warts: Warts are caused by human papillomavirus infection, resulting in localized benign proliferative growths. It can occur in any part of the body, preferably in the fingers, the back of the foot, the edge of the foot, if you feel that affects the aesthetic appearance, you can through the drug, physical therapy or surgical excision treatment. 2. flat warts: flat warts are caused by human papillomavirus infection and are prevalent in children and adolescents. They can affect the appearance of the skin, resulting in the appearance of pimples on the face, limbs, and other exposed skin that are rice or soybean in size, round, oval, flat, and protruding from the skin. 3. Granuloma: Granuloma is usually a nodular lesion caused by macrophages, or a disease caused by allergic reactions. It mainly includes infectious granuloma, foreign body granuloma, nodular disease granuloma, etc. If it occurs in the finger area, it leads to the local appearance of small meatballs. Small meatballs on the fingers can also be considered to be related to tendon sheath cystic hyperplasia, venous aneurysm and other factors. It is recommended to go to the regular hospital for examination, clear diagnosis, and give treatment under the guidance of the doctor to avoid delaying the condition.