Cerebral palsy is a disease that we diagnose clinically when the child has already developed a limb movement disorder. In children with cerebral palsy, motor developmental delays appear very early. The neonatal period is characterized by poor sucking and feeding response. At 3 months of age, children with cerebral palsy cannot lift their heads in the prone position, and their heads and necks are soft and cannot be held upright. There is little kicking or alternating stirrups in the supine position. He cannot turn over. By 4 to 5 months of age, the child cannot reach for objects with both hands and has little movement of the upper limbs. Spastic hemiplegia is often characterized by holding objects on one side only, with little activity on the other side, and often in a fist-like position. In children with cerebral palsy, high muscle tone develops gradually, mostly as hypotonia in the neonatal period. The muscle tone gradually increases with age and the range of motion of the joints decreases. Children with tardive dyskinesia tend to have no increased muscle tone up to 1 year of age and exhibit cogwheel or lead-tube increased muscle tone with age. Tendon reflexes are active or hyperactive in children with spastic cerebral palsy, sometimes leading to ankle clonus and a positive Barr’s sign. Children with cerebral palsy also often show delayed loss of primitive reflexes and diminished or delayed onset of protective reflexes. The embrace reflex is active in children with spastic cerebral palsy. This reflex may not be elicited if muscle tone is extremely elevated. The cervical tonic reflex is normally obvious within 1 month after birth and disappears in 4-5 months. In children with cerebral palsy, the duration of this reflex is significantly longer, thus causing the child to lag behind in turning over. When we support the child with both hands under the armpits and lift the child, the child’s legs are crossed in a “scissors” pattern, the toes of the feet are pointing to the ground, the legs are flexed but not straightened or the legs are not together. We should pay attention to these cases, if they are caused by other reasons. It is possible that it is an early manifestation of cerebral palsy. The grip reflex, which gradually disappears after 2 to 3 months normally, lasts longer in children with cerebral palsy, and the hand is often in the shape of a clenched fist. In summary, early attention should be paid to cerebral palsy when we exclude infants and children with simple motor delays. The most important clinical examination in the early diagnosis of cerebral palsy is the MRI of the head, which is currently an effective tool. It is a good way to visualize the developmental status of the child’s brain, whether there is hypoplasia, wide extracerebral gaps, enlarged ventricles, hypoplasia of the gray matter of the brain, hydrocephalus, etc.