The invention relates to the power transmission and transformation high voltage insulation test technology field and particularly relates to a multi-structure high voltage bushing performance examination detection platform and a test method. The invention adopts a transformer oilpaper bushing, a dry type bushing and a gas-oil bushing to form a closed loop; a high voltage power supply simulates working condition voltage to exert in a bushing circuit; a big current device stimulates operation working condition load current to exert in the bushing circuit; and a set of test experiment platform is formed. The invention can simultaneously perform on-line monitoring and off-line test on the insulation state of the plurality of bushings under the condition close to the working condition, and can carry out immersion type bushing thermostabilization test under the condition close to the working condition.