1.Three months still can’t lift their heads, six months still can’t roll over, eight months still can’t sit. 2.No sound when crying or low, straight cry. 3.The movement of arms and legs is not coordinated, and there are more lateral movements. 4.When peeing, they can’t open their legs. 5.No eye contact with parents, and frequent convulsions. 6.Sleeping for too long or not sleeping. Early diagnosis of cerebral palsy may vary depending on the cause and typology, but early symptoms are common: (Early symptoms in the first half of the infant with cerebral palsy (within 6 months of age). 1.Softness and reduced spontaneous movements, which are symptoms of hypotonia, can be seen at one month. If it persists for more than 4 months, the diagnosis is severe brain injury, mental retardation or muscular system disorders. 2. Body stiffness, which is a symptom of hypertonia, can be seen at one month. If it persists for more than 4 months, it can be diagnosed as cerebral palsy. 3. unresponsiveness and unresponsiveness to name calling, which is an early manifestation of mental retardation. It is generally considered that unresponsiveness to name calling at 4 months and unresponsiveness to name calling at 6 months 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 coracobrachialis, 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 clenched fist: if 4 months still can not open, or thumb inward, especially the presence of one side of the upper limb.