A liquid dispensing device with ratchet is provided with a container, a transmission assembly, a dispensing assembly, and a cap. A pulling of the cap away from the container bounces a carrier and unblocks an inlet opening. A further turning of the sleeve toward a predetermined direction co-rotates both the rotation ring and the externally threaded pipe to move the plunger toward bottom of the container along the externally threaded pipe in order to push the liquid to flow to the application head via the channel, the inlet opening, and the passage.