The manifestations of cerebral palsy are various depending on the cause and typology, but are mostly seen in the early stages: (Early symptoms in the first half of the infant with cerebral palsy (within 6 months of age). This is a symptom of hypotonia and can be seen at one month of age. If it persists for more than 4 months, the diagnosis is severe brain injury, mental retardation or muscular disorders. 2. Stiffness of the body, which is a symptom of hypertonia, can be seen at one month. If it persists for more than 4 months, cerebral palsy can be diagnosed. This is the early manifestation of mental retardation. It is generally considered that if the reaction is slow at 4 months and the name is unresponsive at 6 months, it can be diagnosed as mental retardation. 4, abnormal head circumference: head circumference is an objective indicator of the morphological development of the brain, and children with brain injury often have abnormal head circumference. 5, poor weight gain, nursing inability. 6, fixed posture, often due to abnormal muscle tone as a result of brain injury, such as angular arch, frog position, inverted U-shaped posture, etc.. It can be seen in the first month after birth. 7, does not smile: if 2 months can not smile, 4 months can not laugh loudly, can be diagnosed as mental retardation. 8.Hand clenching: If the hand cannot be opened at 4 months, or the thumb is inward, especially in one upper limb, it has important diagnostic significance. 9. Body torsion: 3-4 months old infants with body torsion often suggest an extraconal injury. Head instability: Inability to hold the head up in prone or sitting position at 4 months of age is often an important sign of brain injury. 11, strabismus: 3-4 month old infants with strabismus and poor eye movement can indicate the presence of brain injury. 12. Inability to reach for objects: If the infant is unable to reach for objects at 4-5 months of age, the diagnosis may be mental retardation or cerebral palsy. 13. Gaze at the hand: if it is still present after 6 months of age, it can be considered as mental retardation. Some brain injuries are mild and often have no obvious symptoms in early infancy, but in the second half of the infant’s life (6-12 months) there are some other symptoms: 1. inability to roll over 6 months later, there is diagnostic significance. 2. not using the lower extremities 6-7 months of age do not use the lower extremities to support weight briefly 3. not using one hand 7-10 months of age do not use one hand to grasp play. Fine hand movements, such as pinching small objects, unbuttoning, and belt-tying, are inflexible and uncoordinated, and occur at 7-10 months of age. 5.Can’t sit alone 7 months old. 6.Can’t grasp standing 10 months old can’t grasp standing. 7.Can’t say good-bye to others Diagnostic significance after 10 months of age. 8.Stands on tiptoe 10 months old and still stands on tiptoe. 9.Can’t take steps After 13-15 months, still can’t take steps. 10. Drooling and “hand eating” are diagnostic after 12 months of age.