The fullness of the thyroid gland is not necessarily serious, but the specific analysis of the fullness of the thyroid gland is as follows: 1. Some people are born with fullness of the thyroid gland, that is, they are born with a larger thyroid form than others and no thyroid-related diseases, but only a physiological form of fullness. The first thing you need to do is to get a good idea of what you are getting into. Once a full thyroid is detected, you should go to the hospital for relevant tests, including thyroid ultrasound and thyroid function tests, to rule out serious diseases and then provide appropriate treatment according to the situation.