The diagnosis of early pregnancy is mainly based on medical history, symptoms and auxiliary tests as follows: a. Menopause, usually regular menstrual cycle, history of sexual life, healthy women in their reproductive age, once menstruation stops for more than 10 days is highly suspicious of pregnancy. If menopause is more than 8 weeks, pregnancy is more likely. Early pregnancy reaction, about half of the women will have dizziness, weakness, drowsiness, lack of appetite, partiality and anorexia, nausea, morning sickness and other symptoms around 6 weeks after menopause, which are called early pregnancy reaction, and mostly disappear on their own around 12 weeks of pregnancy. Third, other symptoms, because early in pregnancy, the enlarged, anteriorly inclined uterus in the pelvic cavity can cause frequent urination, in the 12th week of pregnancy, the uterus into the abdominal cavity no longer press on the bladder, then the symptoms disappear. Under the regulation of the neuroendocrine factors of pregnancy, the breasts increase in size and engorgement in the 8th cycle of pregnancy, and the breasts can be consciously swollen. The first of these is the first of a series of tests that can be performed to determine the presence of the HCT in the serum of the pregnant woman 8 days after fertilization. 2. Ultrasonography can be used to determine pregnancy, estimate gestational age and exclude ectopic pregnancy, trophoblastic disease, ovarian tumors, uterine abnormalities and serious fetal malformations.