Cerebral palsy is a non-progressive brain injury caused by various causes during the perinatal period (before birth to within 1 month after birth). The main manifestations are central motor deficits and postural abnormalities that appear in infancy and may or may not be accompanied by mental retardation, epilepsy, behavioral abnormalities, and perceptual disturbances. The prognosis of some children with cerebral palsy will vary with early diagnosis and early intervention. Early diagnosis is defined as diagnosis within the first 6 months of life, while diagnosis within 3 months is considered ultra-early diagnosis. Most of the patients with cerebral palsy are due to brain damage caused by perinatal asphyxia and hypoxia, intracranial hemorrhage, and other factors, in addition to infection, hemolysis, and jaundice, which can also lead to cerebral palsy. In addition, infection, hemolysis and jaundice can also lead to cerebral palsy. Infants with obstructed labor (oversized fetus, fetal malposition, abnormal birth canal, low amniotic fluid, umbilical cord winding, weak contractions, etc.) or those requiring assisted delivery such as fetal head extraction, lateral incision, forceps, etc.; infants born by cesarean section, premature birth, low birth weight infants; infants with suspected prenatal or postnatal viral or bacterial infections; mothers with mental illness, epilepsy, tuberculosis, lupus erythematosus and other autoimmune diseases, requiring drug maintenance treatment during pregnancy, and infants with mother-infant blood type incompatibility Babies with hemolytic tendencies are at high risk for cerebral palsy. Obstetricians and gynecologists should be aware of the high risk group and should record the perinatal conditions in the birth records for the reference of the pediatrician who will see them later. Parents should know that their children are at high risk for cerebral palsy and learn how to observe them: In the neonatal period, it is difficult to diagnose cerebral palsy in the neonatal period, but careful observation will reveal some clues. If you touch the baby’s mouth with the nipple, a normal child will automatically find the nipple and suck vigorously, but a “cerebral palsy” child cannot; a child who is too quiet or easily provoked, or who cries incessantly for no reason, etc. is worth being alert to. In the supine position, the lower limbs are straight, the legs are difficult to be separated (abducted), and sometimes the back muscles are tense, which is medically known as the antalgic posture, i.e., the head, shoulders and hips are on the bed, and the back is arched away from the bed: both elbows are flexed and both hands are tightly clenched. However, most children with cerebral palsy show hypotonia and reduced activity, making early recognition more difficult. 1. Within 6 months of age: As the age of the child increases, the child with cerebral palsy moves from hypotonia to hypertonia. If the child moves its joints, it can feel impedance, which is not as natural and flexible as a normal child, and cannot be reached by touching the ear with the heel. The normal child can play with his hands by himself at 3-5 months of age, but the child with cerebral palsy cannot; the normal child can raise his head prone in March and sit alone in June, but the child with cerebral palsy cannot do so. During this period, children with cerebral palsy are more likely to be irritated, startled by the sound, cry continuously, have difficulty sleeping, have difficulty inserting their arms into the sleeves when dressing, have difficulty separating their legs when changing diapers, have difficulty breaking their fists when taking a bath, and immediately become rigid when their lower limbs are just at the corner of the bath tub or water surface. If parents find the above phenomena, they should go to the hospital for systematic examination. 2. 6 months-1 year: Almost all children with cerebral palsy should be diagnosed at this age. Normal children can stretch their legs and follow them alone at 6-8 months, but children with cerebral palsy cannot become submissive because of high tension and both legs are straight, and they are strongly supported into sitting position and then fall backwards after releasing their hands; when pulling double and into upright position from sitting position, the knees do not bend, both lower limbs are stiff, and both toes are on the ground; not being able to crawl after 7-8 months is also a common symptom in children with cerebral palsy; when crawling, the upper limbs or lower limbs will not be alternately stretched and flexed, which side is inflexible, indicating that the contralateral brain The masking test, in which a handkerchief is used to cover the child’s face while lying on the back, shows that the normal child will quickly rip off the handkerchief and hold down one hand, and will rip it with the other hand. Since the symptoms of children with cerebral palsy vary in severity and timing, it is difficult to make a diagnosis by early detection by parents alone. This requires parents to take their children to a dedicated pediatric neurorehabilitation doctor for regular checkups, especially for high-risk children, who should be reviewed at 1 month, 3 months and half a year of age to prevent problems before they occur. Continuous observation of high-risk children by pediatricians is crucial for early detection of cerebral palsy.