Bottles are often sterilized by boiling, usually for about 5 minutes, and the temperature of the water should reach 100℃. Artificial feeding children need to use a bottle to eat milk, before feeding the bottle can be sterilized by boiling water, but not the longer the better, 5 minutes or so can be, too long can be affected by the wall of the bottle. Glass bottles can be sterilized by placing them in a pot with cold water, waiting for the water to boil for 5-10 minutes, then placing the nipple in the pot and boiling for another 3-5 minutes. It is recommended to sterilize bottles at least once a day and wash and sterilize them promptly after each use. In addition, the child’s bottle should not be lent to others, and should be cleaned in time after use. If you need to apply detergent, you should choose a reliable detergent and rinse it thoroughly to avoid detergent residue on the bottle, which is not conducive to your health. It is recommended to replace the bottle once every 3 months and the nipple once every month.