Currently on the market tamoxifen tablets, the price is usually about 50 yuan, mainly for breast cancer metastasis after surgery adjuvant therapy, specific recommendations according to the doctor’s instructions. It is not recommended to be used by patients with endometrial cancer and uterine fibroids, because it can produce estrogen which will aggravate the development of the disease. Long-term use in normal women will lead to a higher risk of endometrial cancer than in ordinary women. During the treatment period, it is recommended that the uterus and the double adnexa ultrasound be rechecked on a regular basis.