Solid Yin Decoction can generally treat pre-menstrual cycle caused by Yin deficiency, but due to the variability of individual constitution, the specific efficacy cannot be generalized. Premenstrual period refers to a woman’s menstrual cycle being more than 7 days ahead of schedule, or menstruation occurring more than twice a month. Ku Yin Decoction is a traditional Chinese medicine formula from Jing Yue Quanshu (景岳全书), which is effective in consolidating the kidney and astringing the essence. The main ingredients of the Decoction are ginseng, Radix Rehmanniae Praeparata, Radix Rehmanniae Praeparata, Cornu Cervi Pantotrichum, Radix Polygoni Multiflori, Radix Polygoni Multiflori, Radix Polygoni Multiflori, Radix Polygoni Multiflori, Radix Polygoni Multiflori, Radix Polygoni Multiflori, and Radix Cuscutae. Solid Yin Decoction can be used for the treatment of yin deficiency and slippery leakage, leucorrhea, and menstrual fluid due to deficiency, and has a certain effect on the improvement of menstrual pre-menstrual period. The contraindications and adverse effects of the drug have not been clarified, if you need to take, please follow the doctor’s instructions. During the period of taking Guiyin Decoction, patients also need to follow the doctor’s instructions for regular review, in order to understand the recovery of the disease. Once the body abnormal discomfort occurs during the period, need to consult a doctor in time to avoid delaying the condition.