Some babies are very quiet, neither crying nor noisy, not particularly annoying mom, while some babies are hands and feet move constantly, and even often crying and fussing, it is rare to let the mother peace. Of course, this is due to the natural character of the different causes, but for some exceptionally “good” baby, not necessarily from the character, may be the body’s growth and development of congenital anomalies. Generally speaking, especially “good” babies may exist the following kinds of diseases: 1, congenital brain tumor 靓靓 was born more than 9 months, since the birth, he is a mother to let the most worry about the good baby. Every day after eating, he sleeps quietly and does not make any noise at all, whether he is hungry, pooped, urinated, or how noisy it is at home or outside. Unlike other babies, he would cry endlessly if he was not happy. Almost everyone who came to visit said that Liangliang’s mother was lucky to have such an obedient baby, and that she would definitely be able to save her heart in the future, and Liangliang’s mother was very proud of herself. However, the mother gradually found that, compared with the surrounding babies of the same age, Liangliang should be able to do less than the general meeting, such as lifting the head, sitting and other movements; see people, even if it is the mother, face will not show a smile, unlike other babies like attachment to the mother or fear of strangers, will not call mother or father. Sometimes there are occasional vomiting phenomenon, Liangliang’s mother just thought it was because she was overfed and didn’t pay attention to it. Recently, the mother felt that Liangliang was not right, the vomiting phenomenon of Liangliang obviously increased, and there is also a strange phenomenon, that is, after vomiting, Liangliang does not make a noise but immediately fall asleep, and took Liangliang to see the pediatrician many times, and took a lot of medicines for the treatment of the gastrointestinal tract, but the symptom has not been obviously improved, and then after the CT examination, it was known that Liangliang had a congenital brain tumor. The incidence rate of children’s brain tumor is second only to leukemia in children’s tumors, and the annual incidence rate is 3/100,000 to 4/100,000 per year. The common characteristic of children with congenital brain tumor is that they are usually very obedient and seldom make noise, but in fact, this is exactly the brain tumor compressing the brain nerves, which makes the nervous system consciousness change and the phenomenon of vomiting and drowsiness appear. In addition, some children with brain tumor also have symptoms such as enlarged head, unsteady walking, squinting or inability to see upward (i.e. opposite eye or cock-eye), crooked eyes and slanting mouth, neck resistance or slanting neck, short stature or obesity, polydipsia, epileptic seizures and etc. The cause of the tumor may be related to genetic predisposition. The starting triggering cause may be related to genetic predisposition. If parents find their babies with these similar symptoms, can not be sure that it is caused by other diseases, they should go to the hospital for CT, MRI examination, the results of the examination can not only determine the location of the tumor, but also determine the nature of the tumor, to determine the treatment plan. 2, cretinism Shuai Shuai is now 11 months old, after birth has not loved to cry, let him sleep he sleep, everyone praised this baby good, good with. However, Shuai Shuai mother more and more found that he was a little wrong: two eyes dull, not interested in anything, do not like to eat, often 2 to 3 days only to relieve a stool, to the time of learning to speak will not call mom and dad, the size of the child grows slower than other children. Shuai Shuai’s mother brought him to the city children’s hospital for examination, and the result was diagnosed as: cretinism. Cretinism, also known as congenital hypothyroidism, is caused by a congenital developmental defect in the thyroid gland. Typically, babies with cretinism rarely cry from birth, even when they are hungry or have urinated, and are often in a state of low physical response. Children with this disease are characterized by slower growth and development than normal babies, as evidenced by shorter body length, delayed motor development, and lagging behind in speaking and recognizing people and speech. For children with cretinism, if the disease can be diagnosed early within one month after birth and regular treatment can be given in time, it will not affect the baby’s physical and intellectual development in the future. Therefore, mothers should go to the hospital as early as possible if they notice any abnormalities in their babies. The treatment for Down’s syndrome is very simple, which is to take synthetic thyroid hormone replacement therapy. 3, Down syndrome Qiaoqiao 6 months, long very special: small eyes, collapsed nose, small head, small ears. Although Qiaoqiao has his own personality, he is very well-behaved. He doesn’t cry or fuss, even when he’s hungry, thirsty, or urinating or defecating. As Qiaoqiao grows up day by day, Qiaoqiao’s mother feels more and more wrong, intelligence seems to catch up with children of the same age. Mom brought Qiaoqiao to a major hospital in Beijing for a checkup, and it turned out that Qiaoqiao has Down syndrome. Down syndrome, also known as trisomy 21, is caused by chromosomal abnormalities in pregnant women. Children with this disease are usually very good, but with the growth and development of the body, all kinds of abnormalities are gradually revealed. Facial features include: wide eye spacing, small eye lobes, two eyes slanting upward on the outside, deep scars on the tongue surface, and the tongue often sticking out of the mouth; flattened nose, smaller than normal outer ears and head circumference; and lagging behind in motor and speech development, such as late sitting, standing, walking and speaking. In addition, some moderately and severely retarded children are abnormally quiet in infancy and later on, their development in all aspects lags behind that of normal children. Early intervention is extremely important for children with Down syndrome. Mothers should face the reality and train their children as soon as possible under the guidance of a doctor. It is important to note that the home is the best place to implement an intervention program. Therefore, the mother must actively and patiently cooperate with the doctor, and as long as the guidance is persistent, the “good” baby may really become good. In addition, there are also some other diseases that are manifested by children being particularly well-behaved, such as certain congenital heart diseases, delayed intellectual development, and neonatal malnutrition. Therefore, it is not always a good thing for babies to be especially well-behaved in daily life. Once parents find that their babies are especially well-behaved and quiet, they should go to the hospital for developmental tests in time for clear diagnosis and early treatment.