If you can tolerate toothache and gum swelling, there is no problem with eating fish. However, it should be noted that if toothache and swollen gums occur, the best way is to go to a professional dentistry department to view and differentially diagnose the disease and actively make symptomatic treatment, eating fish has no therapeutic effect on toothache and swollen gums. Fish as a frequently consumed meat. People with toothache can eat it, but fish will not relieve toothache or aggravate the pain, so toothache and gum swelling are not directly related to eating fish. In this case, you need to go to a professional dentist, if it is a dental problem, you need to treat the tooth symptomatically and drill the tooth for root canal treatment. If it is a gum problem, periodontal treatment can be performed.