To provide a washing drier with which the influence of surroundings can be eliminated with respect to the judgment of completion of drying operation and the influence of negative pressure generated by a blower can be minimized.

The weight of laundry is detected together with the water amount of dehumidification water generated in a vaporizer 72. The judgement of completion of drying operation is made based on the water amount of dehumidification water and the weight of laundry detected. The influence of surroundings with respect to the judgement of completion of drying operation can be eliminated. Further, the influence of negative pressure on the judgment can be minimized by making judgement under consideration of the weight of the laundry which is not subject to the influence of negative pressure generated in a blower 63.