I often have mothers who bring their 2-month-old child to see me, saying that the child will not turn his head to look for the sound when he hears it, and whether there is a hearing problem. But when I check, all hear the sound and turn their heads. The main thing is that the two-month-old child has poor ability to turn his head. To prove that the baby can hear the sound, I let the baby lie flat on the examination table, I hold the baby’s head with my hand, then let the mother be about 10 cm away from the child’s ear, out of the baby’s sight, gently whistle the baby, the baby quickly turns his head to face his mother and look at her affectionately, then I restore the baby’s head to the midline position and let the mother on the other The baby’s head turned to the other side of the mother, repeated several times can have this performance, which makes the mother believe that the child is looking for the sound. If you don’t know how to use this method, you can use other methods to prove that the child has the ability to listen. When a baby suddenly hears a louder sound, the whole body shakes, both hands make a fist, the forearms bend sharply or frown, blink the eyes, etc. Sometimes you can also see the sucking action. At night when the child is sleeping, if he hears a loud sound, he also shows signs of jumping in alarm. If the above signs are not present, you should be alert because early detection of deafness and early intervention with hearing aids can prevent speech and intellectual impairment. The best test for hearing is auditory evoked potential, if it is normal it is definitely fine.