An impeller type paper money temporary storage mechanism comprises a transmission component (101), an impeller component (102), a temporary storage area (103) and a roller component (104). The transmission component (101) is used for conveying paper money to the impeller component (102), and comprises an upper belt transmission mechanism (1011) and a lower belt transmission mechanism (1012); the upper belt transmission mechanism (1011) and the lower belt transmission mechanism (1012) construct a transmission channel; the temporary storage area (103) comprises a baffle plate (1031) and a temporary storage channel (1032); the baffle plate (1031) is connected with the temporary storage channel (1032), is arranged between the temporary storage channel (1032) and the impeller component (102), and is used for intercepting paper money from a transfer channel in the temporary storage channel (1032). With upper and lower belt transmission channels additionally arranged, the matching relation between the conventional p
