It is not normal for a cat to vomit yellow water several times a day. The following reasons can all cause your cat to vomit yellow water. Firstly, the food. A change in food or a new cat food. In this case, stop feeding the new cat food and feed some probiotics to regulate the gut. Secondly, irritating vomiting caused by new furniture or something that smells too much. Thirdly, infectious diseases, parasites, liver and kidney. In this case, it is recommended that you take your pet to the vet for examination and treatment.
