Follicular adenoma of the thyroid is a benign lesion. Follicular adenoma of the thyroid gland is a benign tumor, characterized histologically by an intact envelope, composed of follicles with broad papillary structures, and often accompanied by hemorrhagic cystic degeneration. Patients with follicular adenoma of thyroid present with an asymptomatic mass in the front of the neck, while some patients with enlarged adenomas show symptoms of pressure on the surrounding tissues, such as dyspnea, dysphagia, etc., and require surgical resection. Follicular adenoma of the thyroid gland is finally diagnosed through pathological examination, and after the operation, the color ultrasound of the thyroid gland needs to be rechecked regularly. Patients with follicular adenoma of the thyroid should be treated under the guidance of a doctor.