In fact, the child is in the developmental stages, soft bed to sleep not a good thing. Even adults slept in soft beds also has many negative factors which have a soft bed to sleep a child negatively? First, the child is still in the midst of growth and development, bone hardness is small, prone to bending deformation. If long-term soft bed to sleep, when to sleep due to one side, causing the formation of abnormal kyphosis to the side. Secondly, in a soft bed to sleep, especially when sleep on their backs, because the relationship between the weight of the mattress sag, bending deformation of the spine and joints ligaments burden, future generations will wake up feeling lower back soreness or pain. In addition, the opportunity hooded sleeping slept soft bed increases. In this way, people would sleep in a hypoxic state, so feel chest tightness, shortness of breath, as well as dreams and nightmares of the phenomenon of some people. Thus, the quality of sleep of people decreases, the effect of not fully rest, wake up always feeling light-headed, limb numbness. Therefore, try to avoid letting children sleep soft bed, so as not to impact on their physical development. Children should be hard bed, in the bed covered with a mat layer 1-2, when the thickness of the body in bed does not exceed the normal degree of change is appropriate.