The effects of thyroid tumor removal vary from person to person, and are also related to aspects such as whether the thyroid gland is removed and the size of the removal. Possible effects include hypothyroidism, decreased hormone secretion, generalized discomfort and other symptoms. 1. Hypothyroidism: The most common effect of thyroid tumor removal is hypothyroidism. Patients will have low metabolic symptoms such as mucous edema, fear of cold, weight gain and memory loss. 2. Decrease in hormone secretion: if most of the thyroid gland is removed or lateral lobectomy is carried out for the removal of thyroid tumor, some hormones in the body will be reduced, such as thyroid hormone and insulin, if the remaining thyroid tissues can not compensate for the physiological needs of the body. 3. Systemic discomfort symptoms: after thyroid tumor removal, due to the impact on thyroid function, it may lead to fatigue and weakness, constipation, anorexia, etc. It may also cause damage to the pharyngeal nerve. It may also cause damage to the pharyngeal nerve, resulting in hoarseness. The degree of impact on the body after the removal of thyroid tumor varies, and patients are advised to follow the doctor’s advice to deal with it accordingly.