The causes of high thyrotropin in newborns may be physiologic or pathologic, and can be treated by regular review and medication. 1. Physiological high thyrotropin is mainly due to the low thyroid hormone caused by obesity of pregnant mothers, which leads to physiological high thyrotropin, generally does not need special treatment, and can be followed up by regular checkups. 2. Pathologically high thyrotropin needs to be analyzed by ultrasound and hormone examination, and if necessary, thyroid hormone can be supplemented appropriately to treat the growth and developmental abnormalities caused by high thyrotropin. If thyrotropin is high in newborns, they should seek medical treatment promptly.