Fume chamber and ventilation system

The utility model discloses a fume chamber and a ventilation system. The fume chamber is shaped by combining an upper cabinet, a table top, a lower cabinet, wherein the table top is placed on the lower cabinet. The fume chamber comprises a housing which is shaped by compacting a 1.2mm cold-rolled steel plate, of which the surface is painted with 75-micrometer epoxy resin powder; and an operating bench which is made of a 15mm epoxy resin or 12.7mm corrosion-resistant solid physiochemical board. Water retaining edges are arranged on the four side edges of the operating bench. In such a structure, the fume chamber is resistant to corrosion, unlikely to aging, and easy for operation.