Simple breast epithelial hyperplasia is not malignant; it is a benign condition. Simple breast epithelial hyperplasia is an early form of breast dysplasia. The patient is usually accompanied by symptoms of breast swelling and pain, breast lumps, discomfort is affected by the menstrual period, the pain is usually obvious before the period, the symptom is relieved after the period, and is also affected by the mood. Simple breast epithelial hyperplasia also needs to be taken seriously, and if left unchecked, it may lead to malignant changes in the condition. Even for simple breast epithelial hyperplasia, patients are advised to pay attention and go to a regular hospital for treatment as soon as possible, so as not to bring more harm to the body as the condition continues to develop.