Dingkundan is a Chinese medicinal preparation that nourishes qi and blood and regulates menstruation, and is mainly used for irregular menstruation caused by qi and blood deficiency, qi stagnation and blood stasis, or stomach pain caused by menstruation. Since it has the effect of regulating menstruation, theoretically it has the effect of repairing the uterine lining, just because it is a proprietary Chinese medicine, there is no specific research data to show the specific extent of repairing the uterine lining. It can be used to regulate menstruation, and if the symptoms are not relieved after taking the medicine to regulate menstruation for 1 month in a row, you need to do the appropriate examination. In addition, if there is a sudden decrease in the amount of menstruation or menstruation is pushed back, it is necessary to find out the cause and then give the appropriate medication for treatment.