The invention relates to a living public facility, in particular to a novel external suggestion storage box. When a front-end combination body is pushed upwards, letters stored in a rear combination body can be pushed out automatically by the rear combination body; the using position of the suggestion box can be adjusted, and thus the suggestion box can be used for different environments conveniently; and the using height of the suggestion box can be adjusted, and thus different people conveniently deliver letters. The novel external suggestion storage box comprises the front-end combination body, a spring fixing terminal, the rear combination body and a fixing frame; and sealing of the device can be achieved by the front-end combination body, sliding of the front-end combination body canbe limited by the spring fixing terminal, sliding of a front-end combination body main body can be limited by a sliding column nut in the spring fixing terminal, sliding of a slider can be limited bya slider nut, the front-end combination body can be clamped by the slider, the letters can be pushed outwards by an internal pushing slider in the rear combination body, and through cooperation of a roller and a bevel I, sliding-out of the internal pushing slider can be limited.