Gums swollen after nerve killing can be relieved by medication or surgery, and at the same time, attention should be paid to daily care. 1. If the patient is due to pulpitis caused by the phenomenon of swollen gums after killing nerve discharge, clinically use chlorhexidine or hydrogen peroxide solution for treatment, if the patient is due to periapical periodontitis caused by the phenomenon of swollen gums after killing nerve discharge, clinically can be treated by oral metronidazole, ibuprofen and other medications, and can be followed by thorough endodontic therapy. 2. During the treatment period, we should pay attention to the regularity of diet, meat and vegetables reasonably collocation, eat more easily digestible food, eat less spicy food, at the same time, pay attention to drink more warm water, replenishment of a large amount of water, regulate their own metabolic process. As each patient’s physical condition is different, the corresponding treatment plan is also different, it is recommended to go to the hospital in time, after clarifying the cause of the disease, under the guidance of professional doctors for standardized treatment.