To explore the effects of Shentong Zhuyu Decoction combined with extracorporeal shock wave on surface electromyography and balance of quadriceps femoris on athletes with patellar terminal disease(PT).Methods：A total of 78 PT patients were enrolled in the People's Hospital of Anyang City from January 2017 to January 2018.They were randomly divided into a control group(39 cases）and an observation group(39 cases）according to the random number table.The control group received routine rehabilitation treatment,while the observation group received Shentong Zhuyu Decoction combined with extracorporeal shock wave for 6 weeks.The surface electromyography of quadriceps femoris before and after treatment was observed and compared between the 2 groups; the changes of balance ability before and after treatment were observed and compared; the changes of isokinetic muscle strength,muscle endurance and pain visual analogue score(VAS score）before and after treatment were observed and compared between the 2 groups; and the curative effect of the 2 groups was compared after treatment.Results： 1）After treatment,the EMG scores and median frequencies of rectus femoris,lateral femoris and medial femoris in the observation group were significantly higher than those before treatment(P<0.05).There was no statistically significant difference in the above indexes before and after treatment in the control group(P>0.05).After treatment,the above indexes in the observation group were significantly higher than those in the control group(P<0.05). 2）After treatment,the 240 degree/s peak moment,60 degree/s peak moment and muscle endurance flexion and extension of the 2 groups were significantly increased than those before treatment,while the VAS score was significantly decreased(P<0.05).After treatment,the 240 degree/s peak moment flexion,60 degree/s peak moment flexion and muscle endurance of the observation group were significantly higher than those of the control group,and the VAS score was significantly lower than that of the control group(P<0.05),while the differences of 240 degree/s peak moment extension and 60 degree/s peak,and muscle endurance stretching were no significant,without statistical significance(P>0.05). 3）After treatment,the anterior and posterior axes,left and right axes,A2-A6 axes,A4-A8 axes and circumferential axes of the observation group were significantly decreased than before treatment(P<0.05).There was no significant difference in the control group before and after treatment(P>0.05).After treatment,the above indexes of the observation group were significantly lower than those of the control group(P<0.05). 4）The marked efficiency,effective rate and total effective rate of the observation group were significantly higher than those of the control group,and the difference was statistically significant(P<0.05).Conclusion：Shentong Zhuyu Decoction combined with extracorporeal shock wave can relieve pain,improve symptoms and improve curative effects by improving the surface electromyography of PT quadriceps femoris muscle,stabilizing joints and rebuilding balance.