The conduction phase inductance of switched reluctance motor will change with the change of the conduction phase current under the case of magnetic circuit saturation, resulting in a low rotor position estimation accuracy. Aiming at this problem, a position sensorless control method of switched reluctance motor considering magnetic circuit saturation is proposed. Firstly, the relationship formula of the phase inductance function is established, and then the relationship between the phase current and the position angle of the extreme positioning point of the phase inductance is analyzed. Finally, the realization process of estimating the corresponding rotor position angle from the two adjacent extreme positioning points is described. Finally, the related simulation and experiment were carried out with a three-phase 6 / 4 structure motor. The results show the feasibility of the above method.