The puerperium is a period of gradual recovery of the mother’s body and the main clinical manifestations are as follows: 1. Uterine contractions, after the delivery of the fetus, the placenta will be delivered and the uterus will gradually return to its pre-pregnancy size. 2. The color and amount of the nightmare will change with the change of the puerperium. 3. Sweating, within the first half month of the puerperium, there will be a lot of sweating, which will expel the excess water from the body during pregnancy, which is more obvious at night.