Ventilation and dust suction type cotton grade testing worktable

The utility model relates to a ventilation and dust suction type cotton grade testing worktable. The ventilation and dust suction type cotton grade testing worktable comprises a table body and a tabletop at the upper part of the table body, wherein the lower side of the table body is connected with a box body and a draught fan is arranged in the box body; one end of the draught fan is connected with the bottom of the table body by virtue of an impurity collection opening and the other end of the draught fan is connected with an air flue; the air flue extends out of the box body through the bottom of the box body; a drawer for collecting impurities is arranged at the impurity collection opening and is connected with the bottom of the table body by virtue of a slide way; a plurality of impurity holes are distributed on the tabletop; and a door is arranged on the box body. According to the worktable, the table body is provided with the draught fan, the air flue and the drawer which are used for absorbing and col