Don't store the milk sucked out by the breast pump for too long at room temperature, because human milk is rich in nutrients, it is easy to breed bacteria, cause breast milk degeneration, and then give the baby drink will cause diarrhea and other adverse reactions, so it is recommended not to exceed 2 hours. 1. If it is refrigerated, it can be stored for about one week at 0 ~ 4 ℃, and it can be stored for 3 ~ 4 months below 0 ℃, and the freezer that is not often opened can be stored for about 6 months. 2. Frozen breast milk should be thawed before it is given to the baby. You can soak the milk storage bag in cold water for a while, then add hot water gradually, and heat it until the baby can drink. Be careful not to use a microwave oven or a stove fire to prevent damage to the nutrients in breast milk.