Mild cases of Crohn’s disease usually have insidious symptoms in the early stages. Typical symptoms of the disease include abdominal pain, diarrhea, fever, and malnutrition, and the exact clinical manifestations vary from person to person. Crohn’s disease is a chronic non-specific inflammatory disease of the digestive tract. Studies have shown that usually, in the early stages of mild Crohn’s disease, clinical symptoms are relatively hidden and not easy to be detected. However, with further development of the disease, patients will continue to abdominal pain, diarrhea, bowel sounds and other digestive symptoms. Secondly, some patients will also experience systemic symptoms such as intermittent low or moderate fever and malnutrition. However, regarding the specific clinical manifestations of Crohn’s disease, there exists obvious individual variability and cannot be generalized. Secondly, some of the mild cases can be relieved on their own, if the condition is serious, medication and surgery are needed, and the general prognosis is good, if the treatment is not appropriate, the prognosis is not good. To summarize, once the patient is detected with Crohn’s disease, he needs to go to the hospital in time and cooperate with the doctor for standardized treatment.