Purpose This study aims to investigate the effects of scapular mobility enhancing training (SMET) on scapular alignment and upper limb function of chronic stroke patients. Methods The study selected 12 chronic stroke patients that met the criteria at the B hospital and divided them into an experimental group (EG) and a control group (CG). 30 minute intervention was provided five times per week over six weeks lateral scapular slide test (LLST) were assessed to examine scapular alignment, electromyography (EMG) of the anterior deltoid and fugl-meyer assessment (FMA) was assessed to examine upper limb function. Results This study compared the two groups were compared through LLST, and it was found that there was a significant difference between two groups at 0° position, 45° position, and 90° position (p<0.05). EMG of anterior deltoid showed significant differences (p <0.05), whereas FMA did not show significant differences (p>0.05). Conclusion EG that received SMET showed improvements in scapular alignment and EMG of anterior deltoid compared to CG. Therefore, SMET for chronic stroke patients can be considered an effective intervention for improving scapular alignment and muscle activity of upper limb.