It is a machine matched rear PTO tractor with tri-point linkage and gimbal transmission. With the characteristics of compact structure, reliable performance, this machine is suitable for digging holes for trees and picket base, and it can meet various standards of operation through changing aiguilles. The operation efficiency ranges from 30s/set to 60s/set with the operation diameter of 20 to 80cm, and the operation depth from 50 to 100cm.