The utility model relates to a ladder auxiliary device.Suitable for climbing from the ground to a ladder.The ladder auxiliary device comprises: a frame；A pivoting device,It is set in the frame；Second drive unit,It is pivoted on the pivoting device by a transmission shaft；A restricted combination,Including a first limiting arm,A second limiting arm and a slide rail arranged on the frame,One end of the first limiting arm system is pivoted on the transmission unit.The second limiting arm is pivoted on another transmission unit.One end is provided with a pulley which is slidably arranged on the slideway；And a foot pole,One end of the first limiting arm which is different from the driving unit is pivoted on the upper end of the foot bar.One end of the second limiting arm which is different from the pulley is pivoted on the foot bar.Between the lower two ends,Lift the frame by pushing the foot bar against the ground.To achieve the purpose of ladder climbing.一種爬梯輔助裝置，適用自地面攀爬至一階梯上，該爬梯輔助裝置包含：一框架；一樞轉裝置，其係設置於該框架內；二傳動單元，其係藉傳動軸樞設於該樞轉裝置；一限制組合體，包括一第一限制臂、一第二限制臂及一設置於該框架之滑軌，該第一限制臂係一端樞設於該一傳動單元，該第二限制臂係樞設於另一傳動單元，一端設置一滑輪而滑設於該滑軌；以及一腳桿，該第一限制臂相異於該傳動單元之一端係樞設於腳桿之上端，該第二限制臂相異於滑輪之一端係樞設於該腳桿上、下二端之間，藉腳桿推抵地面而抬升框架，而達到爬梯的目的。
