If Crohn's disease presents with fever, it is generally considered possible that it is caused by a bacterial infection. The first step should be to check a stool routine to see if there is a bacterial infection, and symptomatic treatment measures need to be taken. If the body temperature is not particularly high, some antibiotics can be taken to control the progression of the disease. If the body temperature exceeds 38.5°C, an appropriate amount of antipyretics can be used to control the condition and have a fever-reducing effect. During this period, drink more warm water, avoid spicy and stimulating food, as well as raw and cold fruits, to prevent aggravating the condition.