The present study is focused on the discharge air-flow characteristics under the various stator"s shape changes behind the mixed-flow fan. The shapes of the stator are various sweep angles to CCW and CW direction under the same attack and exit angle and various exit angles under the same sweep angle. Along to the sweep angle, the discharge air-flow can make the central concentration flow or not. And under the same sweep angle along to the exit angle of stator, the exit flow can generate the central flow.