There are many ways to prevent cat heartworms. The first is deworming: regularly deworm the cat internally and externally, especially in spring and summer. The second is anti-mosquito: it is best not to let the cat go out in the summer when there are more mosquitoes. , mosquito prevention work should also be done indoors; the third is medicine: regularly give cats heartworm protection, such as selactin, milbemycin and ivermectin; fourth, shaving: take the cat regularly Go to the hospital for a physical examination. If your cat is found to have symptoms of heartworm infection, timely diagnosis and treatment should be made.