The research progress of transcranial direct current stimulation (tDCS) in the field of sports at home and abroad was analyzed through literature metrology. CiteSpace software was used to visualize the literature in CNKI（China National Knowledge Internet） and WOS（Web of Science） core collection database. The results showed that the number of published papers at home and abroad showed a steady upward trend, and the high-yield authors were represented by Fu Weijie and Bikson. High production institutions are represented by Shanghai Sport University and Univ Sao Paulo (University of Sao Paulo); Research focuses on stroke, upper limbs, motor function, motor performance, muscle strength, motor skill learning, etc. At present, tDCS is mainly applied to the rehabilitation of motor function of special people and the promotion of athletic performance of athletes. In the future, advanced non-invasive brain imaging and brain stimulation techniques are needed to further explore its role, influence and mechanism.