Babies are born with a number of innate reflex reactions. These reactions can generally reflect whether the baby’s organism is sound and whether the nervous system is normal. 1.Grip reflex Put your finger in the palm of your baby’s hand, and he will immediately hold the finger tightly by himself. 2.Feeding reflex Touch the skin around the corner of the baby’s mouth with your finger, and the baby’s head will turn to the side of the finger and open its mouth to take the finger in. 3.Sucking reflex Put the nipple or pacifier into the baby’s mouth, there will be a strong sucking action. 4.Hug reflex Lie the baby on his back, pat the bed surface after his arms straight out, hands open, then upper limbs flexed inward, hands clenched fist in the shape of a hug. As the baby matures, all these innate reflexes will gradually disappear on their own after a few months.