In recent years, research on non-invasive brain stimulation targeting motor-related brain areas to enhance motor learning memory performance has increased. Transcranial alternating current stimulation (tACS), as one of the non-invasive brain stimulation techniques, has garnered widespread attention for its ability to modulate neuronal communication signals through induced brain oscillatory activities via externally applied alternating currents. This review summarizes the studies on tACS in enhancing motor learning memory and motor performance across different populations, aiming to provide new strategies for improving motor learning memory and enhancing motor performance in healthy individuals and those with movement disorders.