Premature menstruation is a common symptom of menstrual disorder, which may be caused by endocrine disorders, mood swings, and great pressure in life. Huangqijing oral liquid is a kind of Chinese patent medicine, which has the functions of invigorating qi, nourishing blood and conditioning the body. Proper use of Huangqijing oral liquid can improve physical condition and relieve the symptoms of premature menstruation.