Cats vomiting red liquid that looks like blood may be caused by accidental ingestion of foreign objects, causing gastrointestinal bleeding, or it may be that after eating red food, it irritates the gastrointestinal tract and triggers vomiting, so the cat will vomit red liquid; if the cat has just eaten After eating red food, you can fast the cat first and then feed it some probiotics. If the cat has not eaten red food, it is best to take the cat to the pet hospital for examination to confirm the cause and treat it in time to avoid delaying the condition.