Abstract: Objective To understand the risk factors of coal miners'work-related musculoskeletal disordes（WMSDs） and construct the risk prediction model of coal miners' WMSDs. Methods From 2019 to 2020,1 588 coal miners in 6 coal mines in Xinjiang were selected by the method of stratified cluster sampling,the revised musculoskeletal diseases questionnaire was used to investigated the incidence of WMSDs among them.For the top 3 parts,the logistic regression method was used to screen the variables and construct the prediction model to draw the Nomogram line diagram.The differentiation of the model was evaluated by the area under the receiver operating curve（ROC）,the internal verification of the model was carried out by the method of Bootstrap resampling,and the Calibration curve was drawn. Results The incidence of WMSDs among coal miners was as high as 80.4%,and the top 3 were waist,neck and shoulder.Gender,length of service and type of work had significant differences in WMSDs of waist,neck and shoulder（all P<0.05）. Maintaining a posture for a long time,working in an uncomfortable position,bearing too much weight at a single time,repeating a movement for many times and not getting a rest in time were related to the occurrence of WMSDs（all P<0.05）. Length of service（OR=1.575,95%CI：1.351-1.837）,bachelor degree of education（OR=2.039,95%CI：1.258-3.306）,cold/cool breeze or temperature change（OR=1.419,95%CI：1.109-1.817）,neck tilt for a long time（OR=2.035,95%CI：1.591-2.603）,foot slippage or fall（OR=1.886,95%CI：1.458-2.440）,difficulty in using strength（OR=1.327,95%CI：1.004-1.755） because of uncomfortable posture,and need for upper limb or hand strength（OR=1.264,95%CI：1.004-1.755） were positively correlated with WMSDs. Adequate rest time between work（OR=0.709,95%CI：0.557-0.904）,tunneling workers（OR=0.560,95%CI：0.340-0.922） and electric fitters（OR=0.536,95%CI：0.324-0.887） were negatively correlated with WMSDs. The risk model of WMSDs of coal miners has good prediction efficiency,and the area under the ROC curve was 0.729（95%CI：0.702-0.756 ）. Conclusion Multiple occupational factors are the risk factors of WMSDs of coal miners,and the incidence is relatively high,mostly concentrated in the waist,neck,shoulder.The risk prediction model constructed in this paper can play an auxiliary role in predicting the WMSDs of coal miners.

Key words: Work-related musculoskeletal disordes, Predictive model, Coal miners