The utility model discloses a metal oxide lightning arrester live test experimental study system, including the main transformer of 110kV transformer substation, generating line, three -phase metal oxide lightning arrester and the voltage regulator of standard, still including leakage current of an arrester live test appearance, equivalent salt density solution spray set and infrared thermal imager. The utility model discloses a set up regulator change system running voltage, equivalent salt density solution spray set and thermal infrared imager monitoring facilities operating temperature, the corresponding relation that exists between the research device operating temperature's of being convenient for slewing rate and MOA resistive current's the slewing rate, further pass through to set up the arrester pillar and roll the movable rail way, make this system can be through changing the triphase spatial position overall arrangement of MOA, MOA simulate and around the equipment operating condition change for practicalities such as training teaching or experimental verification are strong, and can inspect the performance of different MOA leakage current live test equipment good and bad effectively.