The present invention provides a recording medium turnover device and a recording medium processing apparatus using the same. The recording medium turnover device comprises: a passage assembly, configured to form a first passage (3), one end of which is connected with a recording medium inlet (1) and the other end of which is connected with a recording medium outlet (2); a turnover mechanism (4), which is located on one side of the passage assembly and comprises a first plate (41) being located below the outlet and extending away from the outlet and a second plate (42) swingably arranged between the outlet and the inlet and forming a recording medium containing space with the first plate; conveying rollers (411, 424), configured to convey the recording medium; and a guide plate (5), which is controlled to guide the recording medium to enter the first passage or the recording medium containing space of the turnover mechanism. According to the present invention, the first passage and the turnover mechanism can share one power device to convey the recording medium, without switching the position state and the rotating direction of a plurality of mechanisms as in the conventional art, so that the structure of the recording medium turnover device and the control method are simplified, thus the number of power devices is decreased and the cost of devices is reduced.