Usually, biologics for ulcerative colitis are administered intravenously. Biologics target the inflammatory factor TNF, whose full name is Tumor Necrosis Factor. By impeding the action of this factor, the drug can effectively relieve the symptoms of ulcerative colitis. They are generally used to induce remission and maintenance therapy in more severe patients. Common drugs such as infliximab, adalimumab, and golimumab. It is recommended that if ulcerative colitis occurs, under the guidance of a physician according to their own situation for appropriate treatment, such as the need to use biological agents for treatment, be sure to follow the doctor’s instructions to grasp the dose of treatment and the use of the cycle, in order to avoid adverse conditions.