At present, there are many kinds of anthelmintics used in cats inside and outside, such as non-peronic, saridine or pyrazoline moxibustion. Oral anthelmintics in vivo mainly include compound preparation of dihydronaphthyridine praziquantel and compound preparation of mifepristone praziquantel. At present, there is also an external drug with both in vivo and in vitro anthelmintic effects, the trade name is Blaine, which is convenient to use. Under normal circumstances, it is recommended that the time for cats to get in and out of deworming is about 1-2 months. If cats often go out, it is recommended to deworm them once a month. If the cat chooses to take the insect repellent orally, it is recommended that the cat feed at least five milliliters of water after taking the medicine orally to avoid causing esophageal ulcer.