Polio can be very harmful to a child’s healthy development, preventing him or her from walking normally. So what are the causes of polio? Polio, also known as poliomyelitis, is an infectious disease caused by the polio virus. Polio is an infectious disease caused by the polio virus, which is the main cause of poliomyelitis. The virus attacks the gray matter of the nerve cell concentrations and damages not only the anterior horn of the spinal cord but also the motor nerves that emanate from it. If children are not treated promptly or if the disease is severe, it can lead to atrophy and deformity of the limbs. It should be noted that the anterior horn and posterior horn of the spinal cord have different functions: the nerves from the anterior horn are motor nerves, while the nerves from the posterior horn are sensory nerves. Therefore, when the motor nerves in the anterior horn are damaged, muscle atrophy will occur, affecting the motor function. Most children with sequelae of this disease will have their limb muscles affected as they develop, which is the cause of polio. The above is an introduction to the causes of polio. I hope that parents will take good care of their children from an early age, and that their children’s health is the most important.