The invention discloses a subway line control cabinet with good moisture-proof effect. The subway line control cabinet comprises seal rings, a drying agent filling chamber, a cabinet top, protection covers, a cabinet body, air holes, cabinet doors, cabinet door switches, fixing pieces, protection cover handles, radiating fins, female buckles, male buckles, rotating shafts, support rods, threaded holes, a partition plate, cable inlet / outlet holes, a drying agent filling port, and a movable bottom plate. The subway line control cabinet is an electric control cabinet for subway lines, and has theadvantages that the top adopts a triangular structure, so that water accumulation at the top is avoided; through a special line aggregation ring, lines in the control cabinet can be more compact andsealed; the drying agent filling chamber is formed in the cabinet body, so that air in the control cabinet can be kept dry in a damp environment, and an interior circuit of the control cabinet can beprotected from damp air; through the additional radiating fins at the back, heat in the cabinet can be effectively reduced; and the cabinet is hung for fixation to prevent moisture and water.