A few days ago, we met a mother who brought her child to the clinic with congenital hypothyroidism. The child was already 1 year old, short and with mental retardation. I asked the mother: Has the child not shown any symptoms before, why did she come to see the doctor only now? The answer was: I didn’t notice it before, but my child was just shorter than others before I came to see the doctor, and people praised my child for being a good boy. Another question: your hospital does not do hypothyroidism screening? The answer is: the child was born quickly, did not have time to go to the hospital, so home birth. Congenital hypothyroidism is characterized by a peculiar facial appearance (pale yellow face, thin and dry hair, puffy eyelids, wide eye spacing, wide and flat nose, large and thick tongue, often sticking out of the mouth), short stature (long trunk, short limbs), low intelligence, low physiological function (poor appetite, non-crying, quiet and inactive, fear of cold, bloating, constipation, etc.). Because of the high incidence of congenital hypothyroidism, the damage to neurological functions in the early stage of life and the ease and effectiveness of its treatment, early diagnosis and early treatment are of utmost importance. If your child has constipation, is not fussy, or has delayed jaundice, beware of hypothyroidism.