The present invention relates to a walker, more specifically, it is possible to fold and deploy the legs to adjust the height of the pedestrian, and in the pedestrian folds into a small volume and easy to carry and store, occurs during folding operation To provide safety devices that can fundamentally prevent possible safety accidents,;The boarding unit 2 and the moving unit 3 are connected to each other by an X-shaped legs 4 and 4 ', and the boarding unit 2 is provided with an adjustment mechanism 5 for folding and deploying the legs 4 and 4'. In the configuration in which the walker 1 can be folded into a small volume, the boarding unit 2 does not completely fall to the moving unit 3 side when the boarding unit 2 is folded to the moving unit 3 side. Fold operation of the walker by providing a safety stopper 6 which keeps the stationary state at a predetermined height from (3), and allows the boarding unit 2 to fall completely inside the moving unit 3 to be folded by the release operation of the stationary state. It is to prevent the occurrence of various safety accidents that may occur at the city.
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