Patients with atypical endometrial hyperplasia can be treated conservatively if they are of childbearing age or have fertility requirements. The patient is treated with high doses of progestin or with an intrauterine levonorgestrel intrauterine delayed-release intrauterine device and the endometrium is retrieved after three months for pathological examination. If the patient still has atypical hyperplasia, treatment can be continued for three months. If the disease has not progressed after six months, treatment can be continued. If the disease progresses, total hysterectomy is required to avoid endometrial cancer, which can affect the health of the whole body. In conclusion, the occurrence of endometrial atypical hyperplasia depends on the age of the patient before the treatment can be determined.