Women during pregnancy, it is generally not recommended to use a hot water bag hot compress belly, both early and late pregnancy, is because of the fear that hot water bag hot compress belly, will affect the growth and development of the fetus, or even lead to pre-eclampsia abortion. Early pregnancy, often accompanied by symptoms similar to PMS lower abdominal discomfort, trying to relieve discomfort with hot compresses, is not appropriate! Because hot compresses on the belly mainly promote local blood circulation in the belly, and hot water bags are hot, so often it may lead to high abdominal temperature, but also may lead to high temperature in the uterine cavity, which will increase the risk of early embryonic development malformations. Sauna is not recommended in early pregnancy, and any fever over 38.5 degrees in early pregnancy may increase the risk of abnormal fetal development. Hot compresses with hot water bags on the stomach in early pregnancy are often due to unstable fertilized egg implantation and may result in abdominal pain and bleeding after the hot compresses, therefore, hot compresses with hot water bags are prohibited in early pregnancy. For women with preterm abortion, hot compresses may lead to further increase in bleeding and even spontaneous abortion. And in late pregnancy, because the uterus has grown, this is the direct hot compress with a hot water bag uterus, that will lead to an increase in the temperature of the uterine cavity, affecting the growth and development of the fetus, so in the whole pregnancy, are prohibited to use hot water bags hot compress, should not be cold compress with cold water bags. So women should not use hot water bags to apply hot compresses after pregnancy, even if they have abdominal distension and discomfort.