First, the sitting posture in class is not correct.

Primary and secondary school students have long classes every day and spend five days a week at school. Students always like to change their posture when they are in class at school, instead of sitting upright on a stool.

When a child is sleepy, he will sleep sideways on the table, which will cause the child's spine to deform and bend. However, children's self-control ability is very poor. Even if someone tells them that this is incorrect, children can't change this bad habit.

Second, bow your head and play with your mobile phone.

Nowadays, children keep their mobile phones and don't want to do their homework after school. They always play mobile phones at home, brush Tik Tok and watch small videos.

Children will bow their heads when brushing their mobile phones, causing their necks to bend for a long time. In the long run, the spine of the neck will not only bend and deform, but also be dizzy and disgusting, which will also aggravate the degree of myopia.

Parents should put an end to children playing with mobile phones. If children really need to query questions on their mobile phones when doing homework, they should set a time for them. After children finish writing and correcting homework, parents should quickly take back their mobile phones to avoid spinal injury caused by playing with them.

Third, schools and parents are negligent in management.

There are so many primary and middle school students with scoliosis in our country, the reason is that schools and parents are negligent in management. Schools should correct children's sitting posture in class. If the child's body is distorted and the sitting posture is incorrect, the teacher should point it out in time.

If the child is playing mobile phone at home or lying on the sofa in an incorrect posture, parents should tell the child in time to let the child develop good habits. Only in this way can children grow up healthily.

Summary: The main reason for this phenomenon is that children sit incorrectly in class. When they come home, they always play mobile phones and computers, which will cause oppression on the spine, and in the long run, it will cause scoliosis.