After a cat vomits, it can restore its gastrointestinal function through dietary adjustments. The methods are as follows:

1. In terms of food, you can feed it food rich in potassium. Pets do not have the ability to store sodium in their bodies, so sodium is most likely to be deficient, followed by chloride and potassium, which are generally not deficient. When pets vomit, potassium is lost in large amounts and the electrolyte balance in the body is disrupted. This is the perfect time to supplement with foods high in potassium.

2. You can feed foods with high carbohydrate content and moderate protein content. Amino acids are the most effective stimulators of gastric acid, so the protein content should not be too high. Appropriate protein content can provide the body with necessary amino acids during gastrointestinal recovery. Carbohydrates have the least stimulation on gastric acid secretion, and carbohydrates can be quickly converted into heat to support the body's operation. Therefore, choosing foods with high carbohydrates and moderate protein content can effectively reduce the burden on the gastrointestinal system and promote the recovery of gastrointestinal function.

3. Foods with low fat and dietary fiber content can be fed. Fat can delay gastric emptying, and crude fiber can also stimulate gastric acid secretion. Therefore, the process of gastrointestinal recovery requires a low-fat and low-fiber diet.

4. Regarding the feeding method, it is recommended to feed slowly to avoid vomiting caused by indigestion. When a cat eats too fast, it can cause regurgitation and spit out the food. It is recommended that owners use slow feeding basins for feeding cats.

5. Probiotics can be added to food to help regulate the gastrointestinal tract. Probiotics mainly mediate intestinal flora and improve intestinal function.