A liquid dispensing device is provided in which contamination can be reduced. A liquid dispensing device (2) includes: a discharge part (12), discharging liquid toward a well (22) of a well plate (8); and an opening plate (10), arranged between the discharge part (12) and the well plate (8) and having an opening (36) formed therein corresponding to the well (22). The opening (36) is smaller in size than the well (22) when the opening plate (10) is viewed in an XY plane.