The utility model discloses a turbogenerator testing arrangement for the ground testing work of the generator that used the underground among the drilling engineering such as oil, colliery and prospecting. Including a test platform, dc speed regulation motor, generator rotor support, tachometer disc, switch, speed governing knob, generator test terminal, speedometer, voltmeter, ampere meter, big or small belt pulley assembly. The utility model discloses a size belt pulley assembly connects dc speed regulation motor and generator rotor, makes the rotor simulation rotate to fixed rotational speed passes test its voltage electric current that sends and interior axle rotor speed, judges the operating condition of turbogenerator.