Low menstrual flow and dysmenorrhea are caused by Qi stagnation and blood stasis, resulting in poor discharge of menstrual blood. There are many reasons for low menstrual flow. Endocrine disorders can cause low menstrual flow. In addition, thin endometrium or adhesions in the uterine cavity caused by uterine surgery can also cause low menstrual flow. Therefore, if you have a low menstrual flow, you should have a timely examination. You can have an ultrasound to understand the condition of the uterus and the endometrium, or a hysteroscopy to understand whether there are adhesions in the uterine cavity causing poor discharge of blood, low menstrual flow and dysmenorrhea, or a hormone 6 test to understand whether the low menstrual flow is caused by the decline of ovarian function, or by diseases such as adenomyosis, which cause low menstrual flow and dysmenorrhea. Based on the test results, timely treatment will be given.