Abstract:Objective The paper is to discuss the clinical efficacy of adding and subtracting Ding-Jing decoction according to menstrual cycle changes. Methods Choose 72 Hypomenorrhea patients that induced by therapeutic abortion operation(kidney-asthenia and liver-depression syndrome), they are randomly divided into two groups and given different treatments:adding and subtracting Ding-Jing decoction(treatment group) and hormonotherapy(placebo group), then observe the clinical effects. Results The effective rate of the treatment group is 94.4%, The effective rate of the placebo group is 80.55%, the two groups have obvious differention. Conclusion Adding and subtracting Ding-Jing decoction with menstrual cycle changes to treat hypomenorrhea patients that caused by therapeutic abortion operation(kidney-asthenia and liver depression type) is effective.