An underground switch laying fixing device of the utility model mainly comprises an I-beam, a press plate, a shock pad and a bolt guide. The underground switch laying fixing device can be widely used in mine up-down haulage roadways, by utilizing the novel mine up-down switch laying fixing device, the fastness and safety of the railroad switch in mine up-down haulage can be forcefully increased, the service life of the railroad switch is extremely prolonged, the maintenance cost is greatly reduced, and the stability and safety of the mine up-down haulage are enhanced, with the features of simple processing, manufacture and assemblage, high performance, safety, reliability and the like.