Falls in the process of riding will cause great damage to the head. Even if the cyclist is riding along the bicycle lane with stable slope at a lower speed, the safety problem cannot be ignored. The reason for wearing riding helmets is very simple and important - to protect the head and reduce injuries. Relevant data show that 75% of the deaths caused by fatal head injuries in more than 500 cycling accidents every year. Medical research has found that wearing helmets on bicycles can prevent 85% of head injuries, and greatly reduce the degree of injury and accident mortality.