To provide an air floating type conveyor system to restrain dusting at a belt conveyor part without using a duct collector or by using a suction fan of small capacity.

A dust collection chamber 30 having a filter 31 is furnished on a side wall part 22a of a chute 3. Air floating the belt B is introduced to the inside of the chute 3 by an air floating type belt conveyor 2, and dust is led to the dust collection chamber 30 by a flow of the air and collected by the filter 31.