Parents nowadays have many ways to learn, and it is because they know a lot that parents always wonder if a certain condition of their baby is normal. The backstage often receives messages like: “My baby is four months old and still can’t turn over, do I need to go to the hospital for training?” “13 months old baby, just can stand independently for a maximum of five or six seconds, is it normal?” “My baby is 5 months old, he only rolls over on one side, but not on the other side, is he developmentally delayed?” There are all kinds of questions, today we mainly talk to you about the development of intelligence and abnormalities of babies at each month of age! 1 month of age 1, motor development: clumsy arm movements; can raise the hand to the line of sight, but also to the mouth; hands clenched fist; primitive reflexes exist (hugging, stepping, foraging, tonic neck reflex, grip reflex, foot grasp reflex); 2, visual development: baby can chase the red ball and human face about 20 cm from his eyes; 3, auditory development: in the baby’s ear at a distance of 10 cm He can hear and turn his head to look for it when he calls his little name or uses toys to make “clucking” sounds. 4, smell and touch development: can identify the taste of mother’s breast milk; like the soft touch. Signs of abnormality: 1 month old baby does not respond to loud sounds; does not suck and eats milk slowly; does not move with objects or faces; limbs are limp and weak; chin keeps trembling. 2 months of age 1, large movements: the baby can lift the head out of the bed to 45 °, or even higher; head upright time gradually extended; happy or irritable when the limbs dance; 2, fine motor: can stretch fingers or fist; see hands play; 3, visual development: there are two kinds of red and green vision; like to see normal faces, do not like the inverted face; 4, auditory development: to new sounds and the environment began to observe; can lie quietly to listen to Language development: they can make “babbling” sounds and can occasionally respond to your teasing; 6. Abnormal signs: 2-3 months old baby does not look at people’s faces, does not look at their own hands 3 months old 1, large movements: head erect for a longer period of time; when lying prone, hands can support the upper limbs, sometimes can lift the chest; can go from supine to lateral position; 2, fine movements: when waking up will wave their own hands; suck their own hands; sometimes will look at their own fingers; hands can touch together; hands holding toys in the mouth to explore; 3, visual and auditory development: sometimes can make fun of; through smell, hearing and visual recognition of the mother. 3, visual and auditory development: more sensitive; 4, language development: teasing the baby will laugh; sometimes can “Ah! Wow!” Social interaction: knows likes and dislikes; cries when hungry, in pain, or uncomfortable, and dances when full and comfortable. Abnormal signals: face-to-face teasing, 3-month-old baby does not smile; baby can not raise his head more than 45° in the prone position; baby can not babble; baby can not follow the mobile toys horizontally in the supine position and turn 180°. 4 months of age 1, large movements: prone forearms support the chest and lift the head; head can maintain balance when held straight; gradually able to lie from supine – side – prone; 2, fine motor: can take all toys from the hands of adults; can grab toys and put them into the mouth; will look at their own hands; 3, visual development: visual maturity gradually developed, can gradually focus on distant objects (e.g., reaching for a bottle when they see it); can pay attention to themselves in the mirror, and have obvious avoidance reactions to approaching objects; 4. Auditory development: will turn their heads happily when they hear a sound; like to listen to pleasant and comfortable-sounding music; will have body movements when listening to music, but the movements are not yet synchronized with the music; 5. Language development: talk to themselves and respond to adult words; 6. Social interaction: reaching out to the mother for a hug and laughing when teased by adults. Signs of abnormality: 4 months old baby’s head is tilted back when sitting; 4 months old baby does not turn his head toward the sound source. 5 months of age 1, large movements: can be more skilled from supine – side – prone; can sit on the back for a moment, leaning forward when sitting alone; like to lie on their backs with their heads up and chest out; can lift their feet to kick when lying on their backs; 2, fine motor: like to touch, shake, knock things; 3, language development: can understand words of reproach and praise; can Cognitive development: likes to look at people in the mirror and smile; can hide and seek; objects that meet the needs of the body, such as bottles and spoons, can attract their attention; Social interaction: begins to recognize people, knows the mother; happy to hear the voice of the mother; when the parents leave, will turn the head to look; selective attitude towards people around, knows to recognize the birth, does not like to be hugged by strangers; 6, self-care: can hold bottle. Abnormal signs: 5~7 months old baby can’t roll over (whether from prone to supine or from supine to prone); 5 months old can’t smile spontaneously. 1. Gross motor: can sit alone for a few moments; when standing with adult support, both legs can do jumping movements; willingness to crawl; 2. Fine motor: can hold things with both hands at the same time; can shake loud toys and grasp hanging toys; can change toys from one hand to the other; can throw and drop things, catch and pat people in the mirror. 3. Language development: can make unintentional sounds such as “ba, ma”; can make more complex sounds such as “a, e, i, o, u”; can use body movements to indicate going outside; 4. Feel pleasant or unpleasant feelings; ask for things and cry when they cannot get them; show surprise and displeasure to strangers and turn their bodies to relatives. 5. Self-care ability: can put the bottle spout into the mouth freely. Signs of abnormality The baby does not laugh; the baby does not take the initiative to hold objects; the baby is indifferent to the people who take care of him; it is difficult to bring food into the baby’s mouth; the baby cannot or will not take the initiative to grasp things. 1.Large movements: sit more steadily; begin to crawl on the upper limbs and abdomen; can pull objects to stand up; 2.Fine movements: thumbs and other four fingers are separated and pinched; begin to play with toys purposefully; 3.Language development: can say simple syllables such as “dada, mama, baba”; begin to understand semantics, recognize The child can recognize objects, such as lamps, books, pens, etc. 4.Cognitive development: interested in the surrounding environment, will focus on the things and toys that interest him; like to look at the cars in the street, look at the birds in the sky; can look for hidden things; know how to look for things when they fall; have the initial imitation ability, some babies can imitate adults to shake their hands to say goodbye; 5.Social interaction: have begun to recognize people, can distinguish between strangers and acquaintances; can identify different attitudes, expressions and voices of adults and voice, and make different responses. Abnormal signs: can’t sit alone; can’t reach for things; can’t crawl (after 10 months); don’t recognize strangers and acquaintances; no response to name calling. 9~10 months of age 1. Gross motor: sit steadily, crawl well, can hold on to stand, hold on to the railing and take steps; 2. Fine motor: hand movement is more dexterous, can pinch small things with thumb and index finger, can put fingers into small holes, put toys into containers, can take toys from drawers or boxes. Cognitive development: they can look at themselves in the mirror and recognize their own existence; they can explore their surroundings and observe different shapes and structures of objects; 4. “Abnormal signs: cannot crawl; crawls with one side of the body (more than one month); does not say simple sounds. 11~12 months old 1.Large movements: can stand up by holding the railing, many babies can stand alone; can step by holding the railing, can walk when an adult holds one of his hands; 2.Fine movements: hands can turn books or manipulate toys and objects; can hold a pencil and scribble; can use hands to put the lid on or open; 3.Language development: can use gestures to indicate needs; can understand more words; sometimes can say some inexplicable words. Some babies have the consciousness to call daddy and mommy; 4. Cognitive development: can point out many things in the room, can point out their five senses; can listen to adults to take things, such as taking dolls; carefully observe the people, animals and vehicles they see; imitate adults to do housework and do actions with music or songs. 5.Social interaction: they can wave their hands to say “goodbye” and clap their hands to say “welcome”; they have a budding sense of self and sometimes disagree with their mother and say “no”; 6.Self-care ability 6. Self-care ability: dresses and undresses voluntarily. Abnormal signs: not using body language, such as shaking or nodding the head; not using hands to point out the corresponding objects or pictures. In the first year of life, babies have a lot of incredible abilities that parents must be good at finding and guiding correctly. Each baby develops a little differently, some faster, some slower. It is recommended that parents compare each month’s growth and development one by one and take their baby to the hospital for professional evaluation if they suspect abnormal signs or lagging performance.