6 months of the baby will crawl is a very good phenomenon, indicating that the development of neuromotor behavior is particularly good, the development of good motor behavior indicates that the neurobehavior is good, if the neurobehavioral development is good then the development of motor development is also very good, the two are complementary to each other. It should be noted that the baby in the premature development of motor behavior should pay attention to vitamin D, as well as trace elements in the reasonable supplementation of calcium, vitamin D absorption can try to about 2 hours of sunlight per day, the most conducive to the skin synthesis of vitamin D. If you can not guarantee that 2 hours of sunlight can be taken orally to vitamin D for additional supplementation, and at the same time can be supplemented with calcium gluconate oral liquid to avoid Calcium deficiency in children, calcium and vitamin D supplementation is conducive to the absorption of calcium. Try not to overdo it during exercise to avoid the baby’s bones being affected.