The reasons why Siamese cats vomit and refuse to eat: 1. It may be because the cat eats randomly and eats foreign objects that cause discomfort. 2. It may be because the cat suffers from hair ball syndrome. 3. It may be because the cat has a viral disease, such as feline distemper. 4. It may be that the cat has indigestion. 5. The cat is infected with digestive tract disease.

Solutions to Siamese cats vomiting and refusing to eat:

1. If the cat eats randomly and ingests foreign objects that cause discomfort, measures to induce vomiting need to be taken, such as Use cat grass or soapy water to induce vomiting and let the kitten spit out the foreign objects on its own.

2. If the cat suffers from hair ball syndrome and causes vomiting without eating, you can help the cat groom its hair and feed the cat appropriate cat grass to help the cat expel the hair ball.

3. If the cat has cat plague. Fluid therapy is needed to correct dehydration and maintain blood pressure.

4. If the cat has indigestion and overeats, causing indigestion and vomiting, you can control the amount of food the cat feeds and eat some probiotics to regulate the stomach.

5. If the cat is infected with a digestive tract disease and causes vomiting without eating, you need to take the cat to the hospital for examination and timely treatment.