The invention discloses a suction output structure in a dryer. A linen collecting box is arranged on a support; a filter screen partition plate is arranged in the linen collecting box, and divides the linen collecting box into two independent cavities, namely a first cavity and a second cavity; a first connecting pipeline communicated with the first cavity is arranged on the side wall of the linen collecting box, and is connected with a suction port of a fan; a second connecting pipeline communicated with the second cavity is arranged on the side wall of the linen collecting box, and is communicated with a discharge port of a dryer body; a movable valve capable of allowing the second connecting pipeline to be unblocked or blocked is arranged on the second connecting pipeline; and a discharge gate structure capable of discharging linen sucked into the second cavity is arranged at the bottom of the linen collecting box. With the adoption of the structure above, automatic discharge can be realized, and the suction output structure is simple, and is convenient and reliable to use.