Outdoor LEU test system and implementation method

The invention discloses an outdoor LEU test system and an implementation method, the outdoor LEU test system comprises an industrial control computer, an LEU communication interface unit, a photoelectric conversion module, a transponder read-write tool, an active transponder, a controllable power supply and a switching recovery relay, a data port of the industrial control computer is connected to the photoelectric conversion module through the LEU communication interface unit; and the photoelectric conversion module is connected with an S interface of the tested outdoor LEU; meanwhile, the industrial control computer is connected with a transponder read-write tool, and the transponder read-write tool reads messages sent by the active transponder in a wireless mode; and the active transponder is connected with a C interface of the tested outdoor LEU, and the tested outdoor LEU is connected with a simulation load. According to the invention, the real working state of the outdoor LEU is simulated, the function a