Aiming at the inverse effect of inertia existing in the reversing of traditional ball-screw mechatronic inerter，a design method of stable switching ball-screw mechatronic inerter is proposed. Firstly，tthe structure and working principle of the stable switching mechatronic inerter is introduced， and the dynamic model of the mechatronic inerter is established based on the dynamic model of the ball-screw inerter and the rotating motor. Secondly， based on the new mechanical and electrical equivalence theory， the mechanical performance output of the mechatronic inerter under different capacitance is simulated and analyzed，and the influence of the motor inductance and resistance on the performance output is studied. Finally，compared with the traditional mechatronic inerter and the stable switching mechatronic inerter， the mechanical properties are tested with and without external load. The results show that the stable switching mechatronic inerter can reduce the inertial impact on the lead screw when the flywheel changes direction， which verifies the effectiveness of the design method.