The cat's condition in this case is already very serious. The owner should send the cat to the hospital for examination in time when he discovers it. If he cannot send the cat to the doctor in time, the owner can first feed the cat some glucose water to prevent the cat from dehydration. He can also feed the cat to stop it. Take vomiting or gastrointestinal medications to relieve physical discomfort. Send the cat to the hospital for further examination.