First, pregnant women doing Pilates can make their pelvic floor and abdominal muscles develop well and adjust the correct arrangement of the spine. It can be seen that Pilates helps the baby to be born smoothly in the future, and it is safer for pregnant women to give birth. Second, due to the changes in hormones during pregnancy, pregnant mothers often have irritability. Proper exercise can help pregnant mothers relax and forget their troubles, which can prevent the occurrence of depression. Then, peaceful Pilates is the most suitable exercise for pregnant mothers. Third, after pregnancy, women's bodies will be bloated, and some pregnant mothers will have unstable centers of gravity. Pilates done by pregnant mothers during pregnancy can maintain a certain degree of core control and physical stability. Fourth, because pregnant mothers will have different changes in pelvis and lumbar spine after delivery. Proper pilates for pregnant mothers during pregnancy can effectively adjust the lumbar spine and avoid the symptoms of pelvic forward tilt. It can also avoid sequelae such as pelvic subsidence, pelvic floor muscle weakness or long-term incontinence caused by excessive pelvic floor extension. The last one is also a welfare that female friends are most concerned about. Doing pilates often can make you recover your strength quickly after delivery. Avoid the sequelae caused by having a baby.