As a subordinateunit ofthemajor coalindustry groups,thecoalmachinequalitycontrolabilityofthecoalmechanis mrepairenterprisesiscloselyrelatedtothecoalminesafetyproduction.Combinedwiththeproductioncharacteristicsofcoalmech anismrepairenterprises,onthebasisofISO9001qualitymanagementsystemcertification,thispapersummarizesanumberofpract icalqualitymanagementmethods,whichhavegoodresultsinpromotingthesteadyimprovementofproductqualityofcoalmechani smrepairenterprises.