The invention discloses a micro tree digging robot with double arc cutters. The micro tree digging robot comprises a power system, a travelling mechanism, a balance mechanism, an execution mechanism and a console which are arranged on a rack, wherein the power system comprises a diesel engine, a hydraulic pump and a fuel tank; the balance mechanism comprises a jacking hydraulic cylinder; the travelling mechanism comprises a track, a drive wheel and a hydraulic motor; the execution mechanism comprises a lifting structure, an unfolding-folding structure and a cutting structure; the lifting structure comprises a support body and a support hydraulic cylinder; the unfolding-folding structure comprises a stretching hydraulic cylinder, a connection block, a connection rod and an unfolding arm; and the cutting structure comprises an arc cutter rest, a working hydraulic cylinder, a rack, a transmission shaft, a gear and the arc cutters. The micro tree digging robot overcomes many shortages existing in a tree digging process of an existing tree digging robot, can be applied to the working conditions of a narrow working space, and small and dense trees, and reduces the manual labour intensity during a small tree transplanting process.