Obstacle-crossing type walking aid

The utility model discloses an obstacle crossing type walking aid which comprises a walking aid body, a front side supporting rod, a control handle, a front side driving planet wheel and a rear side driven planet wheel. The walking aid is characterized in that the front side supporting rod is a telescopic sleeve rod, and it is guaranteed that the walking aid body is located at the horizontal position by adjusting the length of the front side supporting rod in the stair climbing process. The length of the front side supporting rod can be adjusted by controlling contraction or ejection of the fixing bolt, and it is guaranteed that the vehicle body is in a horizontal state in the process of going upstairs and downstairs or other obstacle crossing. The control handle can control contraction ofthe front side supporting rod and rotation of the planet wheel by pressing the control switch with two hands at the same time. The driving planet wheel and the driven planet wheel can provide assistance for a user to go upst