The invention discloses a portable tree digging machine, which comprises an engine, a machine seat device, a motive power connection device, a box frame connected component, a work head, a shock-absorbing device and an operation rod, wherein the machine seat device is arranged on the engine, the motive power connection device is arranged on the machine seat device, the box frame connected component is arranged at one end of the motive power connection device, the work head is arranged at the end part of the box frame connected component, the shock-absorbing device is arranged at the side surface of the box frame connected component, and the operation rod is connected with the shock-absorbing device. The portable tree digging machine solves the problems of low work efficiency, time waste, labor waste and the like of the traditional spade and has the characteristics that the practicality is high, the use is convenient, the efficiency is high, safety and reliability are realized, and the like.