A recording medium conveyance device comprising a conveying unit that conveys a recording medium while sucking the recording medium onto a conveyance surface, and an air blowing unit that is disposed at an upstream side of the conveying unit in a conveyance direction of the recording medium. The air blowing unit is configured to blow air in diagonal directions from a width direction center portion toward side portions at an upstream side of the recording medium, and adjusts a direction in which the air is blown in such a way that a width of an air blowing region of the air becomes narrower than a width of the recording medium conveyed to the conveying unit before the air strikes the recording medium.