Generally, milk will be produced about 48 hours after delivery, or at the latest about one week after delivery, but this situation is usually caused by complications during pregnancy, such as postpartum hemorrhage, gestational hypertension or poor feeding of the mother after delivery. It is generally recommended to let the baby suck on the nipple within half an hour after delivery to stimulate early lactation of the mammary glands, and the mother should pay attention to her diet after delivery and drink more soups, such as chicken soup, fish soup and rib soup. If you have surgery you should also try to eat, if you do not eat well, it will affect the amount of lactation and the time to start milk. During the breastfeeding period, mothers should take more rest and get enough sleep. They need to be emotionally calm and avoid too much anxiety, depression and other bad emotions, otherwise it will also affect lactation. When breastfeeding, you should adopt the right position and avoid straining.