Flesh warts are usually caused by infection with human papillomavirus, and the possible causes are immunocompromised, broken skin mucous membranes or suffering from systemic diseases. Flesh warts are a kind of benign skin growths, mainly manifested as firm papules with rough surface, which can exist for a long time without causing conscious symptoms and occasionally with pressure pain. It is caused by human papillomavirus infection and is mainly seen in children, young adults and immunocompromised people. When there is congenital immunodeficiency, or low immunity, broken skin and mucous membrane, suffering from systemic diseases, such as malignant lymphoma, chronic lymphocytic leukemia. It is easy to be infected with human papilloma virus, which leads to the formation of granular warts. If the patient has a fleshy wart, it is recommended to go to the hospital, after a detailed consultation with the doctor, to carry out the relevant examination to clarify the diagnosis.