The invention discloses a corn bed cleaning, sieving and drying integrated machine. The corn bed cleaning, sieving and drying integrated machine comprises a housing, a feeding hopper, a first motor and a second motor, wherein a bed cleaning cavity, a heating cavity, a screening cavity and a dust removing cavity are formed in the housing; an oblique bed cleaning cylinder is mounted in the bed cleaning cavity, and consists of a cylinder body, a sleeve, a supporting rod and protruding points; a blowing machine is mounted in the heating cavity; a heating device is mounted on the right side of theblowing machine; a cam mechanism is arranged on the left side of a dust filter mesh, and comprises a cam, a second rotating shaft, and the second motor; and a magnetic strip is fixed to the lower endof a deforming part. According to the corn bed cleaning, sieving and drying integrated machine disclosed by the invention, the bed cleaning cylinder is driven to rotate through a first motor, silts and the like infiltrated in corns are sieved off, sandstones infiltrated in the corns are reduced, and the edible mouth feel of the shelled corns is improved; the blowing machine blows in flowing air, after the fallen corns are dispersed, shriveled corns in the corns are blown out through flowing air to separate from the corns, and the product quality of the shelled corns is further improved.