It is useless to use salt water to relieve toothache quickly, as salt water can only serve the purpose of rinsing. A toothache can be caused by inflammation of the pulp and wisdom teeth, which can be treated with root canal therapy and medication to stop the pain. 1. Pulpitis: It is a chronic disease that occurs in the pulp cavity, mainly due to bacterial infection. In the acute stage, there will be intense toothache. The clinical treatment is root canal therapy, through which the infected tissues in the pulp cavity are completely removed, and then the root canal is filled with chemical stabilizers in order to eliminate the pulpitis caused by pulpal lesions. 2. Wisdom teeth inflammation: may be due to blocked wisdom teeth do not have enough space to erupt, there will be a blind pocket between the blocked wisdom teeth and the soft tissue, there is a large amount of food debris accumulating in the blind pocket, resulting in a toothache, we can let the doctor to rinse locally, and comply with the doctor’s instructions to take medicines such as roxithromycin and metronidazole to anti-inflammatory drugs to stop the pain, to be the inflammation subsides, you can go to the dentist for extraction. Toothache with salt water can not play a role in pain relief, to be under the guidance of the doctor for regular treatment, can not blindly use drugs, so as not to cover up the condition.