If you do not come into contact with cats, under normal circumstances, the symptoms of cat hair allergy will disappear naturally. Of course, you can also take some anti-allergic drugs to relieve itching and redness of the skin faster. However, it is still recommended that people who are allergic to cat hair should not blindly keep cats, because for some people with severe allergies, cat hair can even cause respiratory asthma. This is a very dangerous situation and may cause death in severe cases. If you really want to keep a cat, those with mild allergic symptoms can choose hairless cats, and those with severe allergies can undergo desensitization treatment.