A blind includes a blind body including a frame and a shade having an end disposed at an outer edge of the frame; a plurality of brake wheels movably disposed in the frame; and a limiting mechanism disposed at an end of the frame. The limiting mechanism includes a resilient element movably disposed in the frame; a winding reel movably disposed in the frame and positioned beside the resilient element; a cord reel movably disposed in the frame and driven by the winding reel; and a plurality of tractional cords coupled to the cord reel, passingly disposed at the brake wheels, and connected to the shade. Lifting or lowering of the shade is effectuated by the limiting mechanism and the brake wheels in conjunction with the external force exerted by the user, such that the blind is advantageously characterized by cordless control, ease of use, and enhanced user safety.