Because only after obtaining the support function, you can sit up by yourself and carry out four crawling movements, so as one of the important training elements. 1.In elbow stance, if the hip joint is flexed and the waist is raised, you can press the arm from above to make the hip joint extend. 2.Insufficient joint extension in the wrist stance, you can give support from the front or the back to maintain. To keep the wrist stance endurance, you can put a pillow under the chest. Attention should be paid to the symmetrical support of the two shoulders, and the fingers must be stretched out. Children with thoracic palsy often make a fist, especially once the thumb is stretched, the other four fingers will be stretched. 3.Training single elbow or double elbow to support weight. Parents of older children can lift the two lower limbs with their hands and tell him to support weight with one arm. For spastic cerebral palsy, two shares can be stretched and opened wide, keeping the two lower limbs in externally rotated position to do so. If the ball is rolled forward, the child will make a protective support action with both arms extended and both hands supporting the ground. In order to improve the ability to support the upper limbs, the child can be gradually induced to bear weight on all fours. In the early stage, parents can help fix both elbow joints or fix the pelvis at the back and let the child swing back and forth on the basis of stability.