The utility model discloses a device for benzene dehydration, including first dehydrator, second dehydrator, third dehydrator and the benzene holding vessel that connects gradually, the bottom of first dehydrator, second dehydrator and third dehydrator be equipped with the drain pipe, and its outside is equipped with and presss from both sides the cover, the cooling water inlet channel is connected to the below that presss from both sides the cover of first dehydrator and second dehydrator, cooling water return water pipe is connected to the top, refrigerated water inlet channel, top connection refrigerated water return water pipe are connected to the below that presss from both sides the cover of third dehydrator. The utility model discloses on current distillation dehydration's basis, reduced the energy resource consumption, the loss of greatly reduced raw and other materials has very big promotion to environmental security. And whole dewatering process can accomplish automatically, need not personnel's operation, and the cost of labor has significantly reduced.