For pregnant women in natural childbirth, when they come to the hospital in labor, the specific tests are as follows: 1. Physical examination: including the measurement of blood pressure, weight, pulse, cardiopulmonary auscultation, liver palpation and other examinations, the size of the uterus needs to be checked, the condition of amniotic fluid, fetal position, whether the fetal head is articulated with the pelvis, the situation of the fetal head into the pelvis, to understand the contractions. Generally, before delivery, the doctor should carry out pelvic measurement to understand the size of the pelvis, whether there are any factors that prevent delivery, combined with the size of the fetus for exclusion; 2. Vaginal examination: generally, the vulva should be checked after sterilization for edema, varicose veins, cervical dilatation, disappearance, position of softness, presence of edema, presence of fetal membranes, presence of vaginal flow, location of the fetal head after entering the disc, presence of labor flow, contractions when 3. laboratory examination: during pregnancy, we should pass biochemical examination, check blood routine, blood type, blood clotting, urine routine. There are also AIDS, syphilis, hepatitis B, hepatitis C. If the infectious disease examination is six months ago, a review should be given to avoid infection in late pregnancy. If the blood type is not checked by the hospital, it should also be rechecked to avoid errors and to avoid being caught off guard when blood transfusion is needed. It is also important to know the function of the placenta, whether there is calcification, post-placental hematoma, etc., whether the placenta is in normal position, whether there is sail placenta, and also to know the condition of the amniotic fluid, whether there is too much or too little amniotic fluid, and whether the fetus is alive through ultrasound.