There are several cases of spontaneous miscarriage: 1. Premature miscarriage: clinically, it only manifests as mild vaginal discharge or vague pain in the stomach. If you want to keep the baby, you can go to a doctor for clinical evaluation and ask him/her to prescribe birth control pills to take according to the specific situation, and pay attention to rest and not to strain. If you don’t want to have a baby, you can go to a regular hospital to see a doctor for an abortion. 2. Refractory miscarriage: Clinical manifestations are more vaginal bleeding, significantly increased abdominal pain, and even vaginal fluid flow. In this case, it is generally not recommended to keep the baby, and it is recommended to go to the regular hospital for abortion as soon as possible. 3. Complete miscarriage: The clinical manifestation is that the embryo or fetus has been completely expelled, vaginal bleeding has stopped and abdominal pain is no longer present. It is recommended to go to the hospital as soon as possible to have an ultrasound to confirm the uterine cavity and to rest well after abortion. 4. Incomplete miscarriage: the clinical manifestation is continuous vaginal bleeding, and it is suggested that the patient should go to a regular hospital for abortion immediately. 5. Indolent miscarriage: the clinical manifestation is the disappearance of early pregnancy reaction, and in the middle stage of pregnancy, the manifestation is the disappearance of fetal movement, the belly no longer increases in size, and the fetal heart cannot be clinically auscultated. It is recommended to seek medical attention immediately. 6.Miscarriage infection: this condition is seen in the case of prolonged vaginal bleeding or illegal abortion, usually with abdominal pain, fever and other manifestations. It is recommended to seek immediate medical attention at a regular hospital and be treated with anti-infective drugs prescribed by the doctor. To sum up, after discovering the manifestations of spontaneous abortion such as vaginal bleeding or abdominal pain, appropriate treatment should be chosen according to the specific situation.