The detection of cerebral palsy in preterm infants is not always possible, but it depends on whether the parents are careful and pay attention to the following aspects: 1. backward movement and reduced active movement. Children with cerebral palsy have low or increased muscle tone compared to normal children; 3. abnormal posture, children with cerebral palsy often have their heads tilted backwards, fall backwards when sitting at 6 months of age, clenching of legs, difficulty in urination and diaper changing, etc.; 4. abnormal reflexes, normal children have sudden lowering of head position, embrace reflex, such as fright-like performance, which usually disappears after 6 months of age, while children with cerebral palsy do not disappear, and various other abnormal reflexes. In addition, some physiological reflex checks and pathological reflex checks need to be performed on the child. Through these above symptoms, we can assess whether the child has cerebral palsy symptoms and further determine whether the child is a child with cerebral palsy.