To provide a liquid discharge apparatus in which liquid drop after a liquid is discharged is prevented with a simple structure.

The liquid discharge apparatus for pressure-supplying a liquid and discharging from a discharge nozzle 4 by a pressure supply means 2 has an one way valve 7 provided in a liquid passage between the pressure supply means and a discharge port 5 of the discharge nozzle 4 and opened only in the flow-out direction by pressure-supplying the liquid by the pressure supply means 2, a by-pass passage 8 provided in the liquid passage 6 to by-pass the one way valve 7 and a liquid drop preventing means 9 provided in the by-pass passage 8 for preventing the liquid drop by the suction-work of the discharge nozzle 4 when the pressure-supply is stopped by the change of pressure occurring in the pressure supply means 2.