The application of near-far field transform technology in target characteristics testing is studied. By performing near-field imaging processing, far-field calculation and reconstruction, and convolution integral correction on the simulation results of the aircraft model, the near-field scattering can be transformed into the far-field. At the same time, the near-far field transform technology can effectively solve the problem encountered when measuring the Radar Cross Section(RCS) under the conditions not satisfying the far-field. By RCS tests on metal conductor cylinders, missile models, conventional aircraft models, angle reflectors, etc., and comparing the RCS test results of the single cylinder compression field with that of the plane wave compression field, it is obtained that the near-far field transform technology is suitable for those targets using stealth reduction technology, showing the effects of correcting the measurement data to a certain extent and improving the test accuracy. Nevertheless, the near-far field transform technology is completely unsuitable for those targets without taking stealth measures.