1, intelligent development characteristics ① large movements: can lie prone and lift the head slightly off the bed to 45 °, or even higher; head upright time gradually extended, from a few seconds to several minutes; happy or irritable when the limbs dance. ② Fine motor: can stretch fingers or make fists by themselves, and look at their hands to play when their hands are on their chest. ③Visual development: lying flat on the bed, eyes will follow moving objects; have red and green color vision; can gradually pay attention to the internal structure of graphic patterns, the beginning of image recognition; prefer to look at normal human faces, do not like to look at faces with upside down features or faces. ④Auditory development: they can turn their heads to look for sound sources and become aware of new sounds and new environments; they can lie quietly and listen to music; they can gradually distinguish between high and low sounds. ⑤Language development: begin to make “babbling sounds”, and can occasionally make vocal responses when talking to the baby. ⑥Social interaction: sometimes smile at the teasing of adults, can gradually recognize the mother through smell, hearing and vision, and show that the mother cries less and is quieter when holding the baby. 2, ability training ① prone head lift: baby from birth to 1 month if you pay attention to practice head lift, to 2 months can lift the head 45 ° to 90 °. When practicing prone head raising, generally in the case of fasting, that is, one hour before breastfeeding, awake state, prone bed surface should be flat and comfortable. Place the baby’s hands on either side of the head, and the parents can use some toys with sound and bright colors to tease the baby in front to stimulate the baby to lift the head. Each training time starts from 30 seconds, gradually extending the time, you can train several times a day. You can exercise the strength of the baby’s neck and back muscles, but also help to increase the infant’s lung capacity. ② Head erection: Hold the baby upright several times a day appropriately to train the baby to erect the head. 2 months old baby’s head can be erected for a few seconds to 1-2 seconds, when practicing, parents should protect the baby. You can also hold the baby’s back against the mother’s chest, hold the baby’s chest with one hand and hold the baby’s buttocks with the other hand, so that the baby’s face is facing forward, the novelty can arouse the baby’s interest and make the baby more active in practicing head lifting. Don’t hold your baby’s hands with cloths or gloves, but hold your baby’s sleeves to make your baby’s hands visible and move them easily so that your baby’s hands and fingers can be fully active. When your baby can open his hands and look at them, you can give your baby toys that are easy to grasp and play with, so that you can practice holding them and stimulate your baby’s hands to open and touch. At 2 months of age, your baby’s legs become active, so you can give your baby open crotch pants to facilitate the activity. After changing diapers or taking a bath, you can massage your baby’s legs with your hands and stretch his legs so that both legs can move freely, which is beneficial to the development of motor functions. 3, cognition, language and interaction ① should give the baby rich visual stimulation: baby lying on his back, hanging some toys of interest to the baby at 20-750px above his body, such as colorful rings, bells and balloons, better with sound, or brightly colored pictures, put 1-2 pieces at a time to stimulate the baby’s interest and follow the objects. ②To talk more with your baby: speak in a higher pitch, slower, with longer pauses between phrases, more use of repeated words to express intimacy such as baby, mother, etc., which helps the baby to confirm, analyze and remember, and later can gradually transition to the use of standardized language to promote its hearing development. When talking to your baby, if you find that he makes a sound like a yes, your mother can pause temporarily to increase the chances of your baby participating in the “mother-infant chain”, which will help to build a strong parent-child relationship. ③Create a good routine: ensure the baby’s health and nutrition at the same time, to establish a good “biological clock”, as soon as possible to establish a circadian rhythm. Gradually understand the baby’s habits and patterns, correctly meet his requirements, and establish good habits. 4, abnormal situation: 2-3 months old baby does not look at the face, not looking at their own hands. In these cases, you should seek professional medical examination.