To provide a vehicular air cleaning device capable of cleaning air only in a local space in a short time without diffusing air pollution generated on a part of a cabin to the whole of the cabin.

A suction port 1a of an air cleaner 1 is provided near an occupant head part on a front seat 3, a blow-off port 1b lateral in the vehicle width direction is provided between the front seat 3 and a rear seat 4, and air is blown off approximately vertically toward the floor part in a cabin. The air cleaner 1 is operated by the forced amount, an air conditioner 2 in the front part in the cabin is interlocked to make preset value operation with an air intake, and air is blown off from a defroster. Therefore, an air curtain is formed between the front seat and the rear seat, diffusion of pollution can be prevented, the flow of air circulating in a space around the occupant on the front seat is formed by the air conditioner 2 and the air cleaner 1 and limited to a local space, and efficient air conditioning and an air cleaning can be performed in a short time, and power can be saved.