The invention discloses a hopper device for a spring-free microcomputer combined scale, which comprises a hopper body, a hopper door, a motor, a swing rod, a movable support and a mounting rack, wherein the swing rod is connected to an output shaft of the motor, the motor is mounted on the mounting rack, the movable support is hinged with the mounting rack, the hopper body is mounted on the mounting rack, and the hopper door is hinged with the hopper body; a hopper door driving shaft and a pull rod are further included, the hopper door is connected with the movable support through the pull rod, the hopper door driving shaft is installed on the movable support, and the swing rod is movably connected with the hopper door driving shaft. A spring does not need to be used, the motor is used for driving the swing rod to rotate, rotation of the swing rod is converted into movement of the hopper door driving shaft through the movable mechanism, opening and closing of the hopper door are controlled through the pull rod, and high noise caused by springback of the spring, and falling precision affected by generated vibration are reduced; and the conditions of spring breakage and falling are avoided.