A proliferative endometrial pattern is a pathologic finding on scraping that indicates the presence of endometrial thickening. This may be a normal physiologic phenomenon or it may be an abnormal endometrial hyperplasia. The endometrium is the lining of the uterus and responds to estrogen and progesterone during the menstrual cycle. The cycle of endometrial changes can be divided into three phases: proliferative phase, secretory phase, and menstrual phase. In the early, middle and late stages of the proliferative phase, the endometrium will have different degrees of thickening phenomenon, which is a normal physiological response. At this time, if the pathological examination of scraping shows that the endometrium is in the proliferative phase, there is no need for special intervention. In addition, endometrial proliferative pattern can also be caused by uterine pathology, such as endometrial hyperplasia, endometrial cancer. Abnormal endometrial proliferation is caused by inflammatory stimulation or malignant tumor cell reproduction. In this case, it is necessary to consult a doctor in time for further examination and active management.