Abstract: According to the railroad of NO.250206 working face upper in NO.2502 mining area of a coal mine, it put forward gob-side entry driving technology by retaining narrow coal pillar in mining. Through the FLAC^3D modeling, it analyzed the program of retaining the narrow coal pillar for mining roadway supporting. In theory, it studied the effects of anchor rod and anchor cable on the deformation control of surrounding rock in roadway, thus determined the optimal parameters. By the site supporting application in railroad of NO.250206 working face, it made the long-term data monitoring for multiple measurement points of surrounding rock in roadway, it proved that the optimal parameters supporting had good supporting effects for surrounding rock in roadway.