The invention discloses an earthing press wheel mechanism steplessly adjustable in rice growing stubble field angle. The earthing press wheel mechanism comprises earthing press wheels, a height adjusting device, a pressure control spring device and a soil scraping device, wherein the earthing press wheels are in shapes of circular truncated cones, the diameter of the inner side face of each earthing press wheel is smaller than the diameter of the outer side face of each earthing press wheel so that the earthing press wheels can easily enter soil, the earthing press wheels are rotatably arranged on shafts, and one end of each shaft is spherical, forms a spherical hinge with a fixing seat and can freely rotate in the fixing seat. When the included angle formed by the two earthing press wheels is needed to be adjusted, each shaft is adjusted to be at a set angle, and the spherical end of each shaft is fixed in the fixing seat formed by two symmetrical sleeve blocks. The earthing press wheel mechanism has the advantages of easily adjusting the angle formed by the earthing press wheels and being simple in structure and suitable for popularization.