If the neck is short and thick, if it is physiological short and thick, you can exercise the neck appropriately. Certain thyroid diseases can lead to short and thick neck, and you need to treat thyroid diseases. 1. Physiological short and thick: in daily life, you need to exercise your neck, there are many ways to exercise, you can stretch your neck upward, you can turn your neck to both sides, and then tilt your neck backward, it is possible to make your neck longer and thinner. 2. Thyroid disease: if the occurrence of hyperthyroidism and other diseases, the thyroid gland will be enlarged, and the thyroid gland is located in the neck, so the neck will appear short and thick, you need to treat the relevant thyroid disease, usually need to take oral treatment of hyperthyroidism drugs, such as methimazole tablets, propylthiothiopyrimidines and so on, after the relief of the thyroid disease, the short and thick neck can be relieved. The patient can go to the hospital, need to determine the cause of the short thick neck, and then can be treated accordingly.