Asymmetry on both sides of the neck, if it is more obvious mostly belongs to the abnormal situation, most people’s neck is basically symmetrical on the left and right side, some people can have some deviation due to abnormal development, but it is mostly not obvious. If one side of the neck is obviously thickened, we should consider the possibility of lymph node tuberculosis and goiter. The tuberculosis bacillus easily invades the lymph nodes in the neck, causing local lymph node enlargement, pain and adhesion, and causing the thickening of the neck on the same side. Simple goiter due to iodine deficiency is usually characterized by bilateral goiter, but in a few cases, it can appear as an increase in size on one side and an asymmetric neck. Thyroid diseases such as thyroid tumors, thyroid nodules, and cysts tend to cause unilateral enlargement of the thyroid gland, resulting in a significant asymmetry of the neck. In addition, oblique neck, subcutaneous cysts and tumors in the neck can also lead to unilateral neck thickening.