The invention relates to an experiment device for testing rock breaking and abrasion of a three-freedom degree hobbing cutter and a matched hobbing cutter slip ratio and sliding distance measuring method, and aims to solve the problems that hobbing cutter rock breaking and abrasion testing in the prior art is low in measurement precision and particularly cutter abrasion testing is hard to carry out efficiently. The experiment device comprises a base and a hobbing cutter, wherein a rock sample is mounted on the base; the hobbing cutter is mounted above the rock sample correspondingly; the hobbing cutter is mounted on a cutter box of a working table; a transverse moving mechanism, a longitudinal moving mechanism and a vertical moving mechanism for driving the hobbing cutter to move in threecoordinate directions are mounted on the working table; an infrared temperature sensor, an angle sensor and a controller are further mounted in corresponding positions of the testing device. The experiment device has the advantages that the experiment device has three freedom degrees, a cutting depth can be simulated through vertical movement, straight line tracks or arc tracks can be simulated through transverse and longitudinal movement, movement of the hobbing cutter can be simulated for a long time, related experiment data measurement can be also achieved, three-way force, hobbing cutter temperatures and hobbing cutter sliding differences in the hobbing cutter breakage or abrasion process can be acquired at a dry state or with a specific lubricating medium, and cooling and abrasion reduction effects of different lubricating mediums can be judged.