There are generally four situations when a cat always vomits. One is hairball syndrome. The owner can feed it hair vomiting cream or cat grass. The second is digestive disorders. The owner can feed it probiotics and pay attention to its daily diet. The third is esophageal obstruction. The owner can feed it more water and digestive tablets. The fourth is diseases such as colds, feline distemper, and cat-borne abdominal diseases. At this time, cats will have symptoms such as fever and lethargy. ​​​​​​​ If your cat has vomiting, fever, lethargy, loss of appetite, boogers and eye mucus at the same time, it may be sick. Common diseases in cats include colds, feline distemper, feline abdominal infection, feline coronavirus infection, and parasitic infection. Therefore, when a cat shows these symptoms, the owner should take it to the doctor for examination as soon as possible to identify the cause as soon as possible and then treat it symptomatically.