After a cat eats a small piece of plastic, it may be excreted through body metabolism. The owner can feed some probiotics to help the cat regulate its gastrointestinal condition. If the situation is serious, it may cause intestinal blockage, bleeding, and death of the cat. If the cat eats a piece of plastic, It should be stopped in time and brought to the pet hospital for surgery to remove the foreign body to prevent the cat from being life-threatening.