Vehicle cover device

A vehicle cover device (100) comprises an air inflation power mechanism (1), a gas circulation mechanism (2), a cover shielding mechanism (3) and a coil retraction mechanism (4). When a vehicle roof skylight (C4) of the vehicle body is opened, the cover shielding mechanism (3) is hidden between the vehicle roof skylight (C4) and a vehicle roof (C3) along with the vehicle roof skylight (C4); when the vehicle roof skylight (C4) of the vehicle body is closed and the vehicle cover device (100) is started to make the cover shielding mechanism (3) be unfolded, the air inflation power mechanism (1) inflates the cover shielding mechanism (3) through the gas circulation mechanism (2), so that the cover shielding mechanism (3) is unfolded due to air inflation from the vehicle roof to the outside; when the vehicle cover device (100) is started to make the cover shielding mechanism (3) be folded, the coil retraction mechanism (4) retracts the coil, so that the cover shielding mechanism (3) is folded in the direction from the outer edge to the vehicle body.