Hair loss is a relatively common condition in the contemporary population. Hair is an appendage of the skin and hair loss is a type of skin disease and therefore requires a visit to a dermatologist for examination and treatment. Common types of alopecia areata include seborrheic alopecia, tinea capitis, baldness, androgenic alopecia, postpartum alopecia or alopecia secondary to specific diseases, some of which are associated with endocrine metabolic disorders within the body. Although hair loss does not affect physical health, it largely affects the degree of aesthetics and can easily lead to psychological problems in serious cases, so the treatment of hair loss is very important. The treatment needs to go to the dermatology department of a regular hospital to improve the physical examination, endocrine and nutritional metabolism examination, and hair pulling examination. According to the cause of the disease and the severity of the condition, medication, conservative treatment or hair transplant surgery can be carried out, and the prognosis is generally good after regular treatment. Patients should maintain a relaxed and happy mood in daily life to avoid excessive psychological burden due to hair loss and eventually a vicious cycle. The diet should maintain a balanced diet structure, consume more foods rich in vitamins, proteins and various trace elements, and ensure good habits in order to help improve hair loss completely.