Abstract: A wheeled walker with dual-brake systems has a frame, two grips, at least three wheels, a seat cushion, at least one brake assembly, at least one manual system, and at least one seat actuating system. The brake assembly selectively stops the wheel. The seat actuating system is connected to the brake assembly and has a seat actuating segment and a seat brake cable. The seat actuating segment is mounted pivotally on the frame and selectively abuts the seat cushion. When a user sits on the seat cushion, the seat cushion presses downward the seat actuating segment. Then the seat actuating segment actuates the brake assembly to stop the corresponding wheel. Therefore, the brake assembly actuates the brake automatically when the user sits on the wheeled walker.