The causes of female hair loss include physiological factors and pathological factors, of which pathological factors include androgenetic alopecia, baldness, ringworm and so on. 1. Physiological factors:Under normal circumstances, hair growth is cyclical and natural hair loss will occur. In addition, unbalanced diet, frequent late nights, emotional instability, etc., will also occur hair loss, but usually less than 100 hairs per day, is a normal phenomenon, do not need special treatment. 2. Androgenetic alopecia: this disease has a certain genetic predisposition, but also with high androgen levels, but also with the hair follicles and their surrounding tissues in the presence of transforming growth factors inhibit the follicle metabolic process and other factors. It is characterized by symptoms such as progressive hair thinning, shedding and thinning. 3. Patchy baldness: the etiology of this disease has not been fully clarified, may be related to genetic, autoimmune, neuropsychiatric, endocrine disorders and other factors. It is characterized by sudden hair loss that lasts for several months to several years, and when it is severe, it is not cured. It is recommended that if patients suspect that hair loss is caused by disease, it is best to go to the dermatology department of a regular hospital in a timely manner, follow the doctor’s instructions to clarify the diagnosis, and actively treat it to avoid delaying the condition.