Abstract: Objective Methods Toevaluatetheriskofhearinglosscausedbyworkplacenoiseinurbanrailtransitenterprises. Noiseexposedworkers from eight rail transit lines in an urban rail transit enterprise was selected as the research subjects - usingconvenientsamplingmethod.Thenoiseintensitywasdetected,andtheriskofnoise inducedhearinglosswaspredictedby Results the method of the International Organization for Standardization. The incidence of noise exceeded the standard detection points was 8.3% (175/2 101) from 2016 to 2018. For risk classification in interval tunnel repairmen, higher risk was predictedattheageof40yearsoldandwiththelengthofserviceof20years,andhighriskwaspredictedattheageof50or60 yearsoldwiththelengthofserviceof30or40years.Theriskclassificationofstationinspectoratthepredictedageof 50years oldandthepredictedageof30yearswasnegligible,anditwasacceptableatthepredictedageof60yearsoldandthepredicted ageof40years.TheriskgradesofmaintenanceworkersinvehicledepotundertheabovetwopredictedconditionsweremediumConclusionrisk,whiletheriskclassificationofdriversunderwasacceptablerisk.Therailtransitenterprisehasacertain degreeofnoisehazardsintheoperationprocess.Theriskanddegreeofhearinglosscausedbynoiseincreaseswiththeincrease ofthelengthofservice.