How long it takes for new hair to grow back varies from person to person, and usually postpartum hair loss lasts up to 3-6 months, with most not lasting more than a year. The increase in estrogen levels during pregnancy will stimulate hair growth, and the rapid decline in hormone levels after delivery can lead to massive hair loss. In addition, the relationship between mental factors and hair is also very close, before and after delivery due to a variety of reasons caused by emotional instability or mental stress, will lead to metabolic disorders, nutritional deficiencies and other hair loss. Hair loss caused by the above conditions can be restored to the previous state in about 1 year after delivery. If the hair loss phenomenon still does not stop 9-12 months after delivery, it is recommended to go to the endocrinology department of the hospital in time for examination and treatment. Postpartum hair loss must pay attention to balanced nutrition, it is recommended to use non-stimulating comb and shampoo suitable for their hair to take care of their hair, and at the same time can be improved through the massage of acupuncture points to improve the situation of hair loss.