The 20-year-old endometrium does not grow need to check whether it is primary or secondary, if necessary, need to use estrogen plus progesterone drugs to regulate menstruation, prompting the endometrium to proliferate. 1. Primary: there may be irregular or no menstruation, small uterus, etc. You need to go to the hospital in time for ultrasound examination, follicle monitoring, hormone six tests, anti-Müllerian tubular hormone test to confirm the diagnosis of ovarian function. Need to use estrogen, such as ethinyl estradiol cyproterone tablets, vinyl estradiol tablets, etc. plus progesterone tablets to regulate menstruation treatment, must be under the guidance of the doctor according to the course of treatment. 2. Secondary: due to abortion surgery, uterine surgery, etc., damage to the endometrium basal layer, caused by the endometrium does not grow, need to use estrogen plus progesterone to regulate menstruation treatment. Or due to inflammation caused by endometrial adhesion endometrium does not grow, need to be separated from the surgery after estrogen plus progesterone treatment. 20-year-old endometrium does not grow, need to go to the hospital as soon as possible, by the doctor according to the specific causes, the formulation of individualized diagnosis and treatment program, according to the course of treatment, not self-medication, to avoid causing adverse consequences.