The belly at 19 weeks of pregnancy is about one horizontal finger below the umbilicus and the height of the uterine fundus is about 18cm, but there are individual differences. With the increase of pregnancy weeks, the uterus will gradually increase in size. Due to the influence of the distance between the umbilical umbilicus and the umbilicus, the size of the fetus, the amount of amniotic fluid, and the single fetus or multiple fetuses, the size of the uterus in the same gestation week will also have differences. Generally speaking, the fundus of the uterus in 19 weeks of pregnancy is at the position of one horizontal finger below the umbilicus, and the height of the fundus of the uterus is about 18cm, and the uterus can be estimated by the length of the uterus to estimate the size of the fetus and the gestation week. After pregnancy must be under the guidance of the doctor to increase a reasonable and balanced diet, avoid excessive and improper diet, to avoid excessive weight gain, too fast, which will lead to excessive growth of the fetus, but also increase the risk of pregnancy and delivery; and to maintain a moderate amount of physical exercise, can maintain the body appropriate growth, and can be appropriate to reduce the risk of delivery of the mother and fetus. During pregnancy, you should follow the doctor’s instructions to take obstetric examination on time, and if you feel unwell, it is recommended that you go to the hospital in time and follow the doctor’s instructions to deal with the treatment.