Abstract: Objective To explore the mediating role of coping styles between self-efficacy and perceived stress in front-line medical staff. Methods From August to October of 2021,250 front-line medical workers in Yangzhou City were investigated with the general self-efficacy scale（GSES）,the Chinese perceived stress scale（CPSS） and the simplified copying style questionnaire（SCSQ）. Results The self-efficacy score of front-line epidemic medical staff in Yangzhou City was （2.86±0.41）points,the positive coping score was （25.20±6.01）points,the negative coping score was （10.30±4.44）points,and the stress perception score was （21.76±6.70） points.The perceived stress and its two dimensions were negatively correlated with self-efficacy and positive coping style（r=-0.544--0.177,all P<0.05）,the perceived stress and its two dimensions were negatively correlated with negative coping style（r=0.123-0.405,all P<0.05）,the self-efficacy was positively correlated with positive coping style（r=0.512,P<0.05）,and was not correlated with negative coping style（P>0.05）. Both self-efficacy and positive coping style can negatively predict perceived stress（β=-0.338--0.331,all P<0.05）,and the negative coping style can positively predict perceived stress（β=0.358,P<0.05）.The positive coping style played a mediating role in the influence of self-efficacy on perceived stress,and the mediating effect accounts for 26.03% of the total effect. Conclusion The self-efficacy can not only directly and negatively affect the perceived stress of medical staff,but also negatively affect the perceived stress of medical staff through the mediation of positive coping style.

Key words: Medical staff, Perceived stress, Positive coping style, Self-efficacy