Ebituxan is the trade name, generic name of cetuximab injection, the exact time of effect is related to the severity of the patient’s disease and the response to treatment, it is not possible to accurately determine, but generally need to assess the efficacy of the treatment every 2 cycles of use. Cetuximab Injection, an anti-cancer drug, is indicated for RAS wild-type patients, especially those with left-sided bowel cancer. Generally, when combining chemotherapy, two cycles will be applied to evaluate the efficacy, and subsequently, single-agent maintenance therapy can be used to evaluate the efficacy every 2 cycles. The time to efficacy cannot be accurately determined and is usually related to factors such as the severity of the patient’s disease and response to treatment. Cetuximab Injection, which must be administered as a prophylactic with antihistamines and corticosteroids prior to use, may be associated with adverse reactions such as headache, conjunctivitis, chills, nausea, rash, dehydration, or respiratory distress after use. Cetuximab injection is prohibited for use in special groups such as allergies, pregnant women, lactation, etc. Liver function and complete blood count should be checked regularly during treatment. It is recommended that patients use cetuximab injection under the guidance of a physician to avoid blind use of the drug, resulting in adverse consequences.