The invention relates to a power transmission corridor tree obstacle clearing robot based on multi-foot bionic obstacle clearing. The robot comprises a tree obstacle cleaning device and a climbing device, wherein the tree obstacle cleaning device and the climbing device are vertically connected through a supporting column (21). The robot has the advantages that due to the multi-foot design, different kinds of trees, bamboo and the like are held; multiple upper and lower feet move through a multi-rod serial connection worm; by means of an electric saw capable of being pushed from the horizontalto the vertical by a user through two shafts, the problem about tree obstacle clearing is solved; by means of multi-foot intelligent control, the robot can be visually and remotely controlled or autonomously moved, condition investigation, processing and the like can be conducted on the tree obstacles in different types during operation; the robot plays an important role in safe and stable operation of a power transmission line.