At 13 weeks of pregnancy the uterus is in the lower abdomen and the fundus of the uterus is palpable approximately 2-3 transverse fingers above the symphysis pubis. At 13 weeks’ gestation, the fetus has basically taken shape and the uterus gradually enlarges, exceeding the pelvis at 12 weeks. If the baby is standing normally, it is still difficult to see the bulging of the abdomen; if the baby is lying down with the legs flexed, the examiner can touch the uterine fundus 2-3 transverse fingers above the pubic symphysis. At 13 weeks of pregnancy, the heartbeat of the fetus can be detected by ultrasound, and the thickness of the nuchal translucency can also be examined to determine whether there is a possibility of fetal malformation. Pregnant women should undergo regular obstetric examinations to detect fetal abnormalities as early as possible. Pregnant women should pay attention to strengthening nutrition, eating a light diet and less greasy food. They should also pay attention to regular work and rest, and stay up late. At the same time to maintain a good state of mind, so as not to affect the normal development of the fetus.