The invention discloses a pervious area smoothing machine which comprises a traction vehicle chassis, wherein a shell body is disposed on the traction vehicle chassis; a conveying device is disposed in the shell body; a material collection box and a hanging device are installed on a rear end and a front end of the shell body respectively; the hanging device is connected to a leveling working head; the leveling working head comprises a material receiving box body which is equipped with an auger set; a vibrating screen is disposed on the lower part of the auger set; a hydraulic discharge baffle is disposed on the bottom of the material receiving box body; two ends of the material receiving box body are equipped with telescopic oil cylinders respectively, and the upper parts of the telescopic oil cylinders are connected to sensor receiving installation frames; forwardly folded bent plates are installed on outer walls of the telescopic oil cylinders; an adjustable scraping plate is disposed on the other end; a leveling frame is disposed between the bent plates and the sensor receiving installation frames; a first pressing roller is disposed on the bottom of the rear end of the leveling frame; multiple licker-ins with metal thorns are disposed on the bottom of the front end of the leveling frame; and a second pressing roller is disposed on the middle part of the leveling frame. Through application of the structure, the machine has the advantages that the structure is simple; the mechanization degree is high; efficiency is high; perspective effects are good; construction accuracy and construction quality can be increased; and labor strength can be reduced.