There are many causes of oral fever, either due to eating spicy and irritating foods, or caused by diseases such as endocrine disorders, oral inflammation, burning mouth syndrome, etc. Disease factors are as follows: 1. Endocrine disorders: endocrine disorders may lead to disorders in the secretion of the glands in the oral cavity, which may lead to fever in the oral cavity. 2. Oral inflammation: Oral inflammation may also lead to oral fever, such as gingivitis, pulpitis, periodontitis and so on. 3. Burning mouth syndrome: burning mouth syndrome mainly appears in the oral mucosa, there will be localized burning pain, but not accompanied by obvious signs of temporary damage, mainly to the tongue fever, and may be accompanied by tongue sensory abnormalities. There are many reasons for oral fever, if you can rule out diet, it is recommended to go to the hospital in a timely manner, follow the doctor’s instructions to choose a standardized treatment, do not ignore the symptoms, take it lightly, so as not to delay the treatment of the condition.