A seedling culture soil covering device comprises a bottom plate, a soil covering structure, an illumination device, a support device, a dust suction device, a pushing device and a box device. The bottom plate is provided with a first through hole and rolling wheels. The soil covering structure comprises a smashing wheel, smashing teeth, a first supporting rod, a first sway rod, a first triangular block, a first bent rod, a second sway rod and a first vertical rod. The illumination device comprises a second supporting rod, a first transverse rod, a third sway rod, a bulb, a transverse plate and a power source. The support device comprises a third supporting rod, a fourth sway rod, a fifth sway rod, a second transverse rod, a fourth supporting rod, a sixth sway rod and a third transverse rod. The dust suction device comprises a first pipeline, a draught fan, a second pipeline, a filtering box, a filtering screen and an air outlet hopper. The pushing device comprises a first inclined plate, a first support, a second vertical rod, a second inclined plate, a second support, a fourth transverse rod, a first hook part, a second hook part, a first connecting rod and a pushing rod. The seedling culture soil covering device can effectively carry out seedling culture soil covering, and is high in soil covering efficiency and good in soil covering effect.