A liquid injection apparatus which includes a varying portion configured to vary a pressure in an interior of a liquid chamber in accordance with a drive signal, an injection tube having an injection port configured to inject liquid from the liquid chamber, a liquid supply unit configured to supply liquid to the liquid chamber, and a control unit configured to adjust the pressure in an interior of the liquid chamber by controlling the varying portion and the liquid supply unit. The control unit changes a rise time, which is a time period required for a drive signal to reach a second predetermined voltage from a first predetermined voltage in accordance with a speed of movement of the injection port.
