Cats can still be vaccinated when they are two years old. Vaccination has nothing to do with age. Regular vaccination is the best way to prevent cats from getting sick. It is the best choice for cats and owners. ​​​​​​​ If the cat has not been vaccinated before it is two years old, in order to ensure that the cat is in a healthy state, the owner may consider taking the cat for a physical examination first, focusing on screening for the possibility of parasites, viruses and other infections, and then on the premise of good health Begin vaccinations next.