An electronic hydraulic brake device includes: a pedal master to generate hydraulic pressure through pressurization of a pedal and including first and second master chambers; a reservoir including first and second reservoirs to store hydraulic fluid; an electric master to generate hydraulic pressure and including forward and backward chambers; a wheel cylinder to provide a braking force to front and rear wheels; a storage line connecting the pedal master and the reservoir to guide hydraulic fluid; a forward chamber line connecting the first master chamber, the forward chamber, and the wheel cylinder to guide hydraulic fluid; a backward chamber line connecting the second master chamber, the backward chamber, and the wheel cylinder to guide hydraulic fluid; and a connector selectively connecting the forward chamber line and the backward chamber line to guide hydraulic fluid.