Atmospheric environment quality monitor

The invention provides an atmospheric environment quality monitor which comprises a supporting seat, and a supporting arm is welded to the upper end of the supporting seat. Rollers are coupled to the left side and the right side of the upper end of the supporting arm, and steel cables sleeve the outer sides of the rollers; the outer wall of the supporting arm is sleeved with a lifting box, and the upper end of the lifting box is welded to the steel cable. A sensor is mounted in the lifting box through bolts; a gas collection protective cover frame structure is mounted on the left side of the lifting box; a hoisting movable branch box structure is mounted at the lower part of the right side of the supporting arm; a control cabinet is installed on the lower portion of the left surface of the supporting arm through bolts. A PLC (Programmable Logic Controller) and an industrial personal computer are embedded in each control cabinet; and a display is embedded in the left upper part of the control cabinet. Accordin