In view of the facts that student had poor handson ability and insufficient understanding to NC machine tool internal structure in NC teaching practice of many ordinary institutions of higher education, according to the basic request of the traditional CNC machine tool,a laboratory selfmade threeaxis motion platform was presented which could be assembled and disassembled, could be used for secondary development.The 3D model of threeaxis CNC motion platform was constructed in Pro/E, then it was imported into ADAMS software to make kinematics and dynamics simulation, the change curves about the output speed, acceleration, motor torque and consumed power were analyzed. The rationality of the designed platform was validated.