Abstract: In view of the wear failure problem of the guide walking device of the underground bauxite mining machine， according to the wear phenomenon of each part， the actual wear state is analyzed and verified， the meshing position diagram of running wheel and track tooth surface corresponding to different comprehensive wear is given， and the influence factors are analyzed.In this paper， the influence factors of rock fragmentation and hardness， comprehensive wear of guide shoe and track， and mining technology are analyzed in detail. According to the analysis， the countermeasures is put forward to solve the wear and tear， and expounds in detail from three aspects of improving mining conditions， optimizing equipment and strengthening maintenance. The work of improvement and verification has been completed，after the structure improvement， the guide walking device has been tested twice. Through the test of nearly half a year， the life of the new guide walking device of the mining machine has been increased from 1 month to more than 3 months. Based on the above discussion results，the further analysis results show that the key point is to reduce the influence of hard lump rock on the meshing system of track， and the cooperation of equipment， maintenance and environment is more favorable to the improvement of wear problem.The further research direction of solving the problem of wear is put forward， including the track structure， the matching structure of guiding device and the method of separating the hard massive mineral.