Acne on the nose is considered to be a small bump on the nasal vestibule and is related to the anatomical nature of the nasal vestibule skin. The nasal vestibule is covered with epithelial tissue and the skin is rich in hair follicles, sebaceous glands and sweat glands, which are susceptible to infection. Small masses in the nasal vestibule are considered to be caused by small abscesses formed by boils in the nasal vestibule; or they may be caused by sweat glands or sebaceous tumors in the nasal vestibule. Since the nasal vestibule is rich in hair follicles, sebaceous glands and sweat glands, when stimulated by the outside world, especially if you like to dig your nose or pluck nasal hairs, the hair follicles become infected and form small abscesses. If the outside air is polluted and dusty, it can lead to blockage of sebaceous glands or sweat ducts, and sebaceous cysts or sweat gland tumors may form. If infected by human papilloma virus, it can also lead to the development of urticaria or flat warts on the nasal vestibule and the possibility of small masses. It may also be caused by nasal vestibular cysts. If the patient sees a small mass inside the nasal cavity, it is considered to be the inferior turbinate, which is a normal nasal anatomy. If it is not a small lump inside the nasal cavity, you need to go to the Department of Otolaryngology for an examination to get a clear diagnosis and standardized treatment. Do not dig your nose often and do not pluck nasal hair to avoid nasal vestibule infection.