The child’s arm stretched pain, not dare to lift, this situation has two main reasons: 1, radial head subluxation, this situation is mainly due to the child’s radial head position of the annular ligament has not been well developed, relatively weak, in the hand for pulling, may lead to the radial head subluxation. This situation will lead to obvious localized pain, and when lifting the hand often can not be lifted to the position of the ear, and then lifting higher will have obvious pain. Treatment should be taken when the orthopedic radial head subluxation manipulation, so that the radial head back to the normal part of the general wait until the child is older than 5 years old, the position of the annular ligament will gradually develop well, there will be no more subluxation of the situation. 2, is due to the position of the child’s arm, muscles, tendons, ligaments and other soft tissues strained, the child should be allowed to relax the arm rest, avoid continuing to pull and activities, otherwise, the child’s arm will not be able to relax the arm. Avoid continued pulling and activity, or it will lead to aggravation of the injury. In 24 hours after the application of warm water bag for hot compresses to increase blood circulation, promote the recovery of the injury location, the general prognosis are better, recovery is faster.