Abstract:This paper elaborates on the authors’research and application of on-site repair and maintenance operation standards for mining excavators in recent years, analyzes the importance of maintenance operations, studies the variances between theories and standards of on-site repair and maintenance operation for the excavators under various conditions and summarizes key procedures of operation standards. These research results have extended the service life of key components of mining excavators, solved technical problems of frequent breakdowns and prevented personal injury accidents in excavator repair and maintenance and thereby safeguarded safe, efficient and stable maintenance operation of excavator repair and maintenance, which bring good economic benefits and will be promoted in TISCO mines.