1, dietary attention: It is best not to give children under five years old to eat jelly, melon seeds, peanuts, beans and other foods. When eating watermelon can remove the melon seeds first. Eating to avoid talking, laughing, crying or scolding children. To change the bad habits of walking and playing while eating, so as not to cry once you fall cross, the food in the mouth inhaled into the lower respiratory tract. 2, education of children: do not put small toys in the mouth, found in the child’s mouth contains something to try to take out in time. But do not forcibly seize, so as not to cry after inhalation. 3, work habits: adults should change the habit of biting pins, nails and other objects in the mouth when working to prevent accidents. For patients who are not awake after coma or general anesthesia, careful care should be taken: remove the shaken dentures in advance, and when vomiting, the head should be turned to one side to avoid vomit inhalation into the lower respiratory tract. 4, for the elderly and certain diseases, especially cerebrovascular disease patients: special attention should be paid to drinking and eating, preferably in a sitting or semi-recumbent position, do not rush to feed, avoid large mouths of food and water.