The utility model provides an inclined paper money separating device, comprising a paper money adsorption mechanism, a paper money pushing mechanism, a paper money release mechanism, a paper money storing box and a paper money installation plate, the paper money adsorption mechanism comprises a adsorption plate which is opened with an adsorption hole, the paper money pushing mechanism comprises a pushing plate arranged in the storing box, the paper money cavity inside the storing box is in inclined arrangement, an incline slit is left between the adsorption plate and a paper money outlet, without being moved, the paper money adsorption mechanism can release paper money, so that the structure of the paper money separating device becomes simpler so as to realize the miniaturization of the whole machine and make the producing cost low, when the adsorption plate faces to the paper money and blows adsorption wind at the position of the adsorption hole through a source of wind, the paper money can be adsorbed on the adsorption hole of the adsorption plate, the paper money release mechanism can block the adsorption wind at the adsorption hole so that the paper money can automatically fall off from the adsorption plate even when the adsorption plate is not moved, in the way the adsorption and separation of paper money can be realized, and the utility model can be widely used for cash dispenser of automatic teller machines and paper money odd change of automatic vending machines and automatic cashing machines.