This situation may be caused by eating too much too quickly, foreign objects and other factors. Puppies do not know when they are hungry and full, and are prone to overeating. When eating too fast or eating too much at one time, a large amount of food will irritate the stomach and cause vomiting. It is recommended to use a slow-feeding basin for feeding and control the amount of food for each meal. . The puppy accidentally ingested foreign objects such as bones, foam, plastic bags, etc. The foreign objects stimulated the gastrointestinal tract and caused vomiting. It is recommended to take a radiograph to determine the location of the foreign objects and remove them.