The invention relates to a rotary multi-contact corrosive wear testing apparatus, comprising a servo motor, a fixture, a reaction container, an electrochemical test system, a loading device and a fluid impact system. The fixture is connected with a transmission shaft of the servo motor and rotates around the axis of the transmission shaft, the fixture is fitted with a specimen, and the fixture drives the specimen to rotate while rotating; a working electrode is placed in a reaction tank and reacts with the specimen for corrosive wear reaction, and a loading system comprises a loading table, a linear bearing, a pressure sensor and a hydraulic cylinder; the fluid impact system comprises a peristaltic pump, a fluid insulation tank, an impact nozzle, a feed hopper, an adjustable discharge port and a valve. The apparatus of the invention enables rotary friction in multiple contact manners to better observe grinding marks, can simulate corrosive wear behaviors of material under fluid impact and enables the addition of solid particles in a fluid when necessary; the influence of external disturbances upon testing results can be reduced, and signal stability in electrochemical testing can be guaranteed.