In order to further demonstrate the practicability and accuracy of the near-field to far-field transformation algorithm of equivalent magnetic current method in plane near-field measurement. According to the method of moments (MOM), the radiated electric field equation of the equivalent magnetic current on the aperture surface of the planar antenna is established. The waveguide probe is used to collect the electric field distribution of the planar near-field of the antenna to be measured, and then the conjugate gradient method is used to solve the matrix equation to obtain the equivalent magnetic current distribution on the aperture surface of the antenna, and then the far-field pattern of the antenna is calculated with Green's function. Finally, two types of horn antennas are tested. At the same time, the far-field pattern calculated by the equivalent magnetic current method and the far-field pattern calculated by the traditional plane wave expansion method are compared with the measurement results of the compact field antenna test chamber. The results show that the far-field pattern inversed by this algorithm is more consistent with the compact field measurement results than that inversed by the plane wave expansion method under the same test data. For the pyramidal horn antenna, the radiation pattern shows perfect agreement over of for both E-plane and H-plane. For double ridged pyramidal horn antenna, the radiation pattern has excellent agreement up to for E-plane, and for H-plane, which shows acceptable results for the test. The accuracy of the planar near-field measurement using equivalent magnetic current method is verified.