Thyroid hemicolectomy may affect the stomach and intestines. Symptoms of hypothyroidism may appear after the surgery, which may manifest as chills, drowsiness, slow heart rate, weakness of limbs, dull expression, memory loss, slow reaction, menstrual disorders, and may also have digestive symptoms such as abdominal bloating and constipation. Patients with the above symptoms should actively seek medical advice and complete the thyroid function tests. If hypothyroidism is confirmed, thyroid hormone replacement therapy should be carried out under the guidance of the doctor. If gastrointestinal symptoms occur after thyroid hemicolectomy, patients should go to regular hospitals for timely examination and treatment under the guidance of doctors to avoid delaying the condition.