A cat that vomits six or seven times a day may be caused by indigestion, hairball disease, parasites, food allergies, gastrointestinal diseases, etc. The cat’s mental state needs to be observed to see if there are other symptoms. If the cat is in a good mental state but only vomits, then there are hair balls in the stomach. The cat needs to be given some cat grass or hair removal cream. If the cat is accompanied by other symptoms, it needs to be sent to the hospital for examination and treatment in time.