If a small amount of unclean food is eaten and mild symptoms of food poisoning occur, such as nausea, gastrointestinal discomfort, vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms, and the time of eating is relatively short, usually less than two hours, the patient can be cured by himself. Patients need to apply a large amount of salt water to induce vomiting, and thoroughly vomit out the unclean food, the patient’s symptoms can be basically relieved, and this situation will not cause adverse effects on the patient’s gastrointestinal tract, as well as the heart, brain, liver, kidneys and other important organs. After vomiting, we should pay attention to rest at home, pay attention to drink more water, drink more sugar and salt water as well as eat fluffy, easy to digest food, the patient can recover on their own, this can be self-healing, do not need to be in the hospital for observation and treatment.