To provide a liquid discharge device capable of decreasing reduction in a discharge characteristic even when pressure loss is generated by increase of flow velocity of liquid in a liquid supply route, and a control method of the liquid discharge device.

Timing T when a discharged ink amount becomes a predetermined correction target value Iwx in transition of the discharged ink amount of each nozzle from the discharge operation starting time is obtained based on a formula (NF); T=-Log((Iwx-D)/A)×τ. By the obtained timing T, a discharge driving pulse for driving a piezoelectric vibration element is switched from a first discharge driving pulse to a second discharge driving pulse for generating larger pressure fluctuation than the first discharge driving pulse. However, in the formula (NF), A denotes a fluctuation amount of a discharged liquid amount from the discharge operation starting time through a transition state to a steady state (in a case that correction is not performed), D denotes an asymptotic value of the discharged liquid amount in the steady state (in a case that correction is not performed), and τ denotes a time constant (τ=M/R) based on inertance M and flow passage resistance R in the liquid supply passage.