Small children will not be able to jump in a row is probably related to poor physical condition, imperfect development and not mastering the method and so on. 1. Poor physical condition: some small children have poor physical condition, seldom participate in outdoor activities, in the continuous jumping will appear shortness of breath, chest tightness and other symptoms, so small children are not willing to continuous jumping. 2. Imperfect development: small children’s nervous system, muscle development is not perfect, so the balance is poor, it is easy to fall down when jumping in a row, so they do not want to jump in a row. 3. Not mastering the method: children are not born to jump, jumping in a row will appear uncoordinated problems, parents can teach children jumping in a row method. Small children will not even jump may have other reasons, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.