1. New mothers who give birth naturally: Usually, new mothers who give birth naturally should not go on a diet to lose weight within 42 days after giving birth, and their abdominal belts should not be too tight. A reasonable diet is the most important thing, and proper exercise can promote metabolism and avoid heat accumulation in the body. 2, caesarean section new mother: caesarean section new mother should start to lose weight according to the situation of 6 weeks after delivery, it is not recommended to start to lose weight immediately after sitting for a month. Because caesarean section takes time to recover, confinement for one month can't completely restore the body to the prenatal state, so it is not suitable for slimming. Usually, new mothers who have caesarean section can lose weight in turn two months after delivery, and gradually control it through exercise and improving diet structure. You can do running, yoga, mountain climbing, rope skipping and other sports, and each exercise will last for 30 minutes to be effective.