There are many reasons why cats might vomit after eating shrimp. It could be due to poor gastrointestinal function, inability to digest the shrimp meat, or an allergic reaction to shrimp. In cases where a cat vomits after eating shrimp, the first step is to withhold food and water for about 4 hours. Then, feed the cat small amounts of liquid food frequently to reduce the digestive burden on its gastrointestinal tract.

Secondly, you need to give your cat medication to protect the gastric mucosa, orally twice a day for 5-7 days. At the same time, use medication to inhibit excessive gastric acid secretion to reduce vomiting symptoms.