Both of them are Chinese herbal medicines, which are generally used clinically for patients with irregular menstruation and stagnant Qi and blood stasis, but there are some differences. Yimu Cao is mainly used for menstrual disorders caused by blood stasis, generally for incomplete dew after childbirth and low menstrual flow, and has the effect of promoting uterine contraction on the basis of activating blood stasis. Shao Abdominal Stasis Removal Tang has the effect of warming the menstruation and invigorating the blood, relieving smooth muscle contraction, improving dysmenorrhea and regulating menstrual disorders. The specific medication needs to be identified in the hospital, and the medication is different for different causes and diseases. Doctors will identify the symptoms according to the patient’s clinical manifestations, signs, tongue and pulse, and choose the appropriate medicine for symptomatic treatment.