Two bulging bags on either side of the neck may be associated with thyroid disease, lymph node disease, and lipoma. 1. Thyroid gland diseases (1) Thyroid adenoma is a benign tumor, which is mainly manifested in the clinic as a painless lump that can be palpated in the front part of the neck and both sides of the trachea. (2) Thyroid cancer is a kind of malignant tumor, which is mainly manifested as lumps in the neck, and may be accompanied by hoarseness, dyspnea and other phenomena. 2. Lymph node diseases (1)Acute lymphadenitis is a kind of lesion caused by the infection of surrounding tissues or the infection of lymph nodes themselves, which is mainly manifested as lymph node enlargement and pain. (2) Lymphoma, which is mainly manifested as some painless lymph node hyperplasia and enlargement in clinic. (3) Lipoma: Lipoma is a benign change formed due to the abnormal metabolism of local subcutaneous fat, which is mainly manifested as a small lump slightly protruding from the skin, and it is painless and has no adhesion with the skin. The cause of the two bulging bags on both sides of the neck is more complex, the specific circumstances need to ask the doctor for a face-to-face consultation, a clear diagnosis for targeted treatment.