According to the present invention, a vehicular pop-up hood device includes a cylinder, a piston rod that can protrude from a front end of the cylinder, a gas generator to urge the piston rod, the gas generator provided at a side of a rear end of the cylinder, and a bracket to attach the cylinder to a vehicle body. The bracket includes a top portion engaged with the front end of the cylinder, and an overhanging portion for attachment to the vehicle body, the overhanging portion overhanging from the cylinder in a direction intersecting with an axial direction of the cylinder.