The present invention discloses a banknote pressing device, including a banknote blocking mechanism (10), and a left banknote pressing plate (20) and a right banknote pressing plate (30), wherein the left banknote pressing plate (20) includes a movable A end (21) and a B end (22), the right banknote pressing plate (30) includes a movable C end (31) of the right banknote pressing plate and a D end (32) of the right banknote pressing plate, the movable A end (21) of the left banknote pressing plate (20) and the movable C end (31) of the right banknote pressing plate (30) can be synchronously opened, closed and swung with the B end (22) and the D end (32)-as rotating centers, respectively, and a spring (51) and a banknote stacking plate (41) are further arranged below the left banknote pressing plate (20) and the right banknote pressing plate (30).