In order to solve the problem of magnetic field distortion caused by the high magnetic permeability of the end cover of moving coil electromagnetic linear actuator, which leads to fluctuations in the thrust of actuator and the inaccuracy of the analytical solution, a magnetic field analytical modeling method combining the pseudo-period method and the magnetic vector potential method was proposed. Considering the end effect, the virtual array was extended to both sides of the permanent magnet and winding array in the pseudo-period to compensate the end magnetic circuit, and the analytical expressions of the magnetic field distribution of the open circuit and armature reaction were derived in the form of Fourier series. On this basis, the analytical expression of electromagnetic thrust was derived by Lorentz force method. The results show that compared with finite element simulation, the maximum error of the analyzed thrust value is 9.04% when ignoring the end cap, while the maximum error of the analyzed thrust value is 3.97% when considering the end effect, which verifies the effectiveness of the proposed method; the average relative error of the experiment is 3.77%, which verifies the correctness of the proposed method. This method can effectively consider the influence of the end cap on the magnetic field distortion, which provides theoretical reference for solving the electromagnetic characteristics of the electromagnetic linear actuator quickly and accurately, optimizing the structural parameters and the control process.