Endometritis is a common gynecologic disease that can be divided into two categories: acute and chronic, and can be characterized by irregular vaginal bleeding, increased discharge, and abdominal pain. For acute endometritis, it can be characterized by acute abdominal pain, increased discharge or odor, while chronic endometritis can be characterized by increased vaginal discharge or purulent discharge, lower abdominal cramps and lower back pain, or irregular vaginal bleeding in some mild cases. Many women go to the doctor with lower abdominal discomfort, and a specialist examination reveals significant pressure pain in the uterine area, or umbilicus. Patients with endometritis may also present with elevated body temperature, elevated white blood cells and neutrophils, elevated C-reactive protein, accelerated sedimentation, etc. Gynecologic examination may reveal significant uterine pressure and pain, with more discharge or purulent discharge from the cervical orifice, and in some patients, ultrasound may indicate fluid in the uterine cavity. In conclusion, endometritis can often be characterized by increased discharge from the cervical os or purulent or bloody leucorrhea, significant uterine pressure and pain in the lower abdomen, pain and discomfort in the lower back, ultrasound, blood count, C-reactive protein and blood sedimentation, etc., all suggesting inflammatory reactions.