Permanent magnet reluctance linear motor (PMRLM) has the advantages of large thrust density and adjustable magnetic field because it can achieve dual excitation of permanent magnet and current, and its structure is simple and reliable. PMRLM is suitable for various large-scale assembly plants and logistics sorting center. However, due to the presence of double salient structure and permanent magnet flux harmonics, the flux and thrust ripples of the motor are large. Aiming at the above problems, the mathematical model of PMRLM is established, and the thrust stability control based on current analytical calculation is studied. A strategy that can quickly calculate the control current through a given thrust is proposed, and a simulation platform is built. The simulation results prove the effectiveness and robustness of the proposed method.