Class G generally refers to injectable infliximab, and mild Crohn’s disease does not require lifelong injectable infliximab. Although mild Crohn’s disease requires long-term medication, it does not necessarily require lifelong medication. In addition, there are many medications that can be used to treat mild Crohn’s disease, and long-term use of a particular medication can lead to drug resistance and more serious side effects, so lifelong Infliximab injections should be avoided. Mild Crohn’s disease is an early stage of the disease, but because the disease is very difficult to treat, most patients need to use long-term medication as soon as the disease is detected. Crohn’s disease can be treated with glucocorticoids, antimicrobials, immunosuppressants, biologics and other drugs, and injectable infliximab is a biologic. Mild Crohn’s disease is usually under the guidance of the doctor to use the drug can be, in most cases in the condition has improved, can be in the doctor’s prescription to stop using the drug, but the patient should also pay attention to regular checkups, to avoid the disease relapsed after the continuous aggravation.