Breastmilk will not deteriorate in the body for a long time without feeding, and secreted breastmilk will deteriorate if it is not fed for a long time outdoors. Breast milk for a long time without feeding but in the body is not excreted, breast milk in the body is sterile, and the blood is circulating in the body, there will not be deterioration of the phenomenon, breast milk is more than the case try not to long time without breastfeeding, easy to bloat discomfort. Breastmilk is excreted from the body and left at room temperature for a long time will deteriorate, and breastmilk that has been left for a long time is not recommended to be fed to the baby again. Breastfeeding women should let their babies suckle more milk to be able to produce more milk, each time breastfeeding on both sides of the milk to try to empty, to avoid milk stagnation caused by inflammation. During breastfeeding, you should pay attention to the cleanliness and hygiene of the breast, pay attention to nutritional supplementation, and strengthen the quality of milk.