Cramping pain in the abdomen in early pregnancy, accompanied by vaginal bleeding and redness, is usually caused by pre-eclampsia or ectopic pregnancy, which requires timely examination of serum HCG, progesterone and estradiol, as well as perfect ultrasound examination to clarify the specific cause. Common causes and treatments: 1. Pre-eclampsia: It can be caused by strong stress such as abdominal impact on the mother, excessive psychological stress, or endocrine abnormalities. Generally, progesterone, dydrogesterone and other progestins can be used for fetal preservation treatment under the guidance of professional doctors. The prognosis of preterm miscarriage is usually related to the amount of vaginal bleeding and the gestational week, generally the smaller the gestational week, the higher the risk of miscarriage. If the pregnancy is successfully preserved, but the amount of vaginal bleeding is too much, it may lead to consequences such as prenatal bleeding, low neonatal weight and preterm birth. 2. Ectopic pregnancy: It can usually be caused by abnormal fallopian tubes or failure of oral emergency contraceptive pills, etc. Once ectopic pregnancy occurs, you need to go to the hospital for treatment in time. If the patient has no active intra-abdominal bleeding, or if the liver and kidney function, white blood cells and blood red blood cells are normal, methotrexate can be used for drug treatment; if the patient has more serious symptoms, laparoscopy or open surgery can be used for treatment. If ectopic pregnancy does not produce tissue rupture, hemorrhage, or tubectomy, the prognosis is generally better. Precautions: In daily life, patients need to stabilize their emotions, avoid excessive tension, pay attention to hygiene and strengthen perineal care to prevent infection. It is also necessary to strengthen nutrition and timely vitamin supplementation.