If your child develops the following symptoms within 6 months, be highly alert to the possibility of cerebral palsy or brain injury and seek early examination by a specialist: 1; Frequent jerking and frightening; the whole body is flaccid or hard, good at jerking, and often “uttering” sound. 2.1-3 months: not paying attention to people, can’t smile, 2-3 months head back or excessive flaccidity, body jerking, prone position can’t lift head 45-90°, hips raised. Thumbs inward, clenched fist, hard limbs. 3. 4-5 months: no recognition, poor object chasing, squinting eyes, no response to name calling. Quiet and little movement (reduced spontaneous movement) or too much fidgeting; not reaching for objects or abnormal grasping posture, upper limbs back, will not turn over, prone position with head up <90°, lower limbs crossed, pointed feet, sitting position with full forward or backward tilt, stiff limbs. 4, 6-7 months: 6 months hand-mouth-eye uncoordinated, will not sit, stiff or flabby limbs, upper limbs back, toe pointing to the ground when holding the stand, foot inversion, foot exostosis, cross gait. Excessive hand watching and hand playing. persistent pointed foot after 6 months is an important sign of cerebral palsy. Abnormal head circumference: Head circumference is an objective indicator of morphological development of the brain, and children with brain injury often have abnormal head circumference, such as too large or too small.