After gastric lavage, it is generally recommended to eat gradually after 24 hours, and you can basically resume normal diet in about 1 week. Gastric lavage is performed by injecting liquid containing certain drug ingredients into the stomach, mixing it with the stomach contents and repeatedly pumping it out for the purpose of cleaning the stomach, which will cause a certain degree of damage to the gastric mucosa. In order to avoid stimulating the gastric mucosa and aggravating the damage, patients are generally advised to drink water only after 6 hours after gastric lavage and to eat some simple liquid food such as rice soup, noodle soup, milk and other liquid food only after 24 hours. Generally, 3-5 days after gastric lavage, when the condition improves, semi-liquid food, such as thin noodle porridge, rice porridge, vegetable soup, soft noodles, etc., can be eaten. After the body has fully recovered, it can resume normal diet, which usually takes about 1 week, but it should still be easy and soft, easy to digest food. After gastric lavage, you should pay attention to more rest, avoid excessive fatigue, avoid spicy, greasy, cold and other stimulating diet.