Focal complex hyperplasia, a pathological manifestation, has the potential to transform into a malignant tumor, and should be further clarified whether it is combined with atypical hyperplasia. Focal complex hyperplasia is not a malignant tumor, but has the potential to transform into a malignant tumor. Complex hyperplasia usually occurs in the endometrium and is usually related to the patient’s own hormonal imbalance. Most patients do not have specific clinical symptoms, may be accompanied by increased menstrual flow, menstrual disorders, etc., can be found by gynecological ultrasound endometrial thickening, through pathological examination to clarify whether the combination of atypical hyperplasia. Patients with focal complex hyperplasia should consult a doctor for further examination. If there is no atypical hyperplasia, the patient can be treated conservatively, so that it can be transformed into simple hyperplasia, and regular review can be done to prevent malignant changes.