Improper hysteroscopy may cause bacterial invasion, leading to infection; it may also lead to uterine damage, causing bleeding. Hysteroscopy is an invasive examination, the hysteroscope into the uterus, may bring bacteria into the uterus, the uterus if there is no vaginal stable flora, but also improper hysteroscopy brought about by rupture of blood vessels, mucus damage, etc., then it is easy to lead to bacterial infection. However, the current technology of hysteroscopy is already very mature, and at the same time, each examination is a step in the diagnosis of the disease, are required to follow the doctor’s instructions, the examination. If there is any abnormality, then it is recommended to consult a doctor in time to choose an appropriate treatment plan.