Axillary fibroma belongs to a kind of common benign tumor, is formed by the proliferation of axillary fibrous connective tissue, hard texture, smooth surface and hard lumps can be moved, no pain or slight pain when pressed. The reason for its formation is still unclear, and it is considered that it may be caused by inflammation, congenital factors, fibrous tissue aggregation, and axillary paraplasia, which lead to the local formation of lumps. If the axillary fibroma is small and has no obvious symptoms, it usually does not need special treatment, just need to observe carefully and review every 3 to 6 months. If the axillary fibroma is large or accompanied by obvious pain, it needs to be surgically removed. It is recommended to go to the hospital for routine physical examination, axillary ultrasound and other tests to make a preliminary diagnosis, and treat according to the doctor’s advice. Usually should develop good diet and living habits, avoid eating spicy and stimulating food, regular work and rest, avoid staying up late, and keep a good mood.