An appliance for dehumidification, with a body having an inflow unit and an outflow unit; a heat-exchanging apparatus to condense vapor in the air; a fan to forcedly move the air; a tray to collect condensation water descending from a cooling apparatus; a water container detachably provided at an upper portion of the body to store the condensation water; a pump to pump the condensation water from the tray to the water container; and a drain pipe to guide the condensation water from the pump to the water container. The water container may be easily separated from the appliance to empty the water container when the water container is full, and then the water container may be easily mounted again.