Symptoms of infection after IUD include increased vaginal discharge, odor, lower abdominal pain and fever. The IUD (Intrauterine Device) is a contraceptive device placed in the uterine cavity to prevent sperm and egg from bonding and to affect the fertilization of the egg. There will be a small amount of bleeding in the uterine cavity after the IUD is placed, and it is very important to prevent infection after the procedure: prohibit coitus for at least 2 weeks, pay attention to rest; rinse the vulva with water every day, keep the vulva clean and dry; and apply antibiotics under the guidance of the doctor to prevent infection if necessary. There will be a small amount of vaginal bleeding after the placement of IUD, if there is an increase in vaginal bleeding, vaginal discharge, odor, lower abdominal pain, etc. promptly to the regular hospital, after further diagnosis and treatment by a specialist doctor to give appropriate treatment.