There are many symptoms of cerebral palsy, mainly reflex abnormality, backward motor development, abnormal muscle tone and abnormal posture. 1. Abnormal reflexes: Cerebral palsy may cause the disappearance or delayed appearance of many primitive reflexes, such as embrace firing, protective stretching reflex, sucking reflex, and cervical tonic reflex. 2. Lagging motor development: Cerebral palsy may lead to abnormalities in gross and fine motor functions or obvious lagging development, such as inability to hold up the head at the age of 3 months and inability to stand up at the age of 1 year. 3. Abnormal muscle tone: Some cerebral palsy may be accompanied by abnormal muscle tone, with some limbs softening, but some muscles having increased tone, leading to stiffness. 4. Abnormal posture: When a child with cerebral palsy is placed in an upright, supine or prone position, abnormal postures such as hips higher than the head, flexed limbs, etc., will be evident. Depending on the type of cerebral palsy and the part of the brain that is damaged, children may have different symptoms. Parents should go to the hospital when they find their children have the above mentioned symptoms to get a clear diagnosis, so as to avoid delaying the treatment.