The invention provides an anti-flying suspension roll shaft which comprises a horizontal bearing and a bearing support, wherein the both ends of the bearing are provided with an annular convex platform the axis of which coincides with the bearing; an annular permanent magnet is coaxially arranged in the annular convex platform; one pole of the annular permanent magnet faces the axle centre of the annular convex platform, and the other pole of the annular permanent magnet is opposite to the axle centre of the annular convex platform; an annular chute which is matched with the annular convex platform is arranged in the bearing support, the two walls in the annular chute are uniformly provided with limit air holes which are connected with a gas pumping device with a filter screen; and the bottom of the annular chute is provided with two permanent magnets which are symmetrical along a horizontal line, and the polarity of the magnetic poles, close to the end of the annular permanent magnet, of the permanent magnets are same as that of the annular permanent magnet. The anti-flying suspension roll shaft provided by the invention overcomes the problem of lubrication in a suspension manner, and well solves the problem of adhesion and flying of lubricant oil.