During the endometrial proliferation period, it does not matter if the endometrium is in a proliferative state, it is normal. If the endometrium is in a proliferative state during the secretory and menstrual periods, it is important. Normal female endometrium has cyclic changes. In the proliferative phase, the female endometrial surface epithelium, glands, mesenchyme, blood vessels are proliferative changes, mainly related to the role of estrogen, is a normal phenomenon. Therefore, it does not matter if the endometrium is found to be in a proliferative state during the endometrial hyperplasia examination. If the endometrium is found to be in proliferative state during secretion and menstruation, it is important and should be alerted to factors such as ovarian endocrine disorders, abnormal endometrial hyperplasia, and lack of ovulation. Women are advised to undergo further detailed examination in order to clarify the specific condition and take treatment measures according to the doctor’s advice.