Abstract: The disclosure provides a roller conveying device, comprising: a base, a plurality of electric rollers, a left blanking plate and a right blanking plate. the two ends of the left blanking plate and the right blanking plate are provided with a block respectively; the left and right sides of the block are accommodated in the through grooves of the left blanking plate and the right blanking plate respectively; the left and right sides of the block are provided with a recessed cavity respectively; the two ends of the left blanking plate and the right blanking plate are provided with a baffle plate respectively, and the baffle plates of the left blanking plate and the right blanking plate are respectively accommodated in the recessed cavities on the left and right sides of the block to limit the movement of the block, thereby limiting the movement of the base.