The relativistic electron beam can hit the target with a high injection rate under the ideal paramagnetic environment, but in reality, due to the influence of the environment, the transmission direction of the relativistic electron beam may deviate from the geomagnetic field at a small angle, thus the Larmor precession will be generated by the action of the geomagnetic field, which affects the target aiming of the electron beam as well as the amount of the injection to the target. In this paper, based on the two-dimensional sheet relativistic electron beam, taking the paramagnetic relativistic electron beam and the beam with 3° angle deviation from the magnetic field as two cases, through the simulation of the propagation of the bunches, we analyze and study the effect of different transmission distance on the bunch to target rate in paramagnetic environment, as well as that of the 3° deviation from the magnetic field on the amount of injection in the propagation process, thus to provide data for reference in the prediction of relativistic electron beam-to-target rate and target aiming.