Some young parents think that the sofa bed is elastic, soft and comfortable, and it is most suitable for children to sleep. Sofabed is very comfortable, but it also has disadvantages, because sofa bed will affect the normal development of children's spine. The human spine is an important structure to maintain normal standing posture, load, exercise, shock absorption, balance limbs and protect spinal cord. The spine consists of 26 vertebrae with cartilage intervertebral discs between them. From top to bottom, there are 7 cervical vertebrae, 0/2 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae and 3-5 coccygeal vertebrae. When the normal spine stands, there is no lateral curvature, that is, the normal spine is straight from the front or back. But from the side, the spine has four physiological curvatures, which act as springs, forming forward and backward, that is, cervical curvature protruding forward, thoracic curvature protruding backward, lumbar curvature protruding forward and sacral curvature protruding backward.

The physiological curvature of the spine is gradually formed in the process of growth and development. The newborn's spine hardly bends. With the increase of age and the development of static and motor functions, physiological bending gradually appears. When you can support your head independently for 3 months after birth, cervical curvature will be formed. When you can sit alone for 6 months, you will form a chest bend. /kloc-when you start walking at the age of 0, you will form lumbar curvature. But these curvatures are not fixed yet, and will disappear when you are in bed. Generally, these curves will not be fixed by ligaments until you are 7 years old. The cartilaginous layer between vertebrae in children's spine is particularly developed. Therefore, when the child's posture is incorrect or one side is tense for a long time, it will cause spinal deformation. Facts have proved that children sleeping in beds that do not meet the requirements of physical hygiene for a long time is one of the reasons for spinal deformity.

When a child sleeps on his back, due to the heavy trunk, the compression spring sinks downward, which increases the physiological curvature of the spine, and the spine is in an arc state, which makes the ligaments and concerns near the spine overweight. Over time, it is easy to cause hunchback. Children sleeping on their side can easily cause scoliosis, leading to thoracic deformity; At the same time, it is not good for children's lung and heart development.

It can be seen that the bed is too soft, which is not good for children. Since sleeping in a soft bed is not good, is it better to sleep in a hard bed? Plastic surgeons in West Germany believe that sleeping on a hard bed is not good for sleep and human health. Because the hard bed surface can not meet the needs of human body curve, it will cause serious burden and cause various injuries to muscles and spine.

Therefore, a bed that is too soft and hard is not good for children's health, that is, a bed that is neither soft nor hard is appropriate. The ideal bed should be able to meet the needs of human body surface curve, and the buttocks should not sink excessively when lying on your back.