The present invention relates to a vehicle double mat. In the present invention, a vehicle dual mat (1) is installed on the floor in the vehicle spread auxiliary selectively on the upper surface of the main mat (10) to prevent contamination of the vehicle floor according to the shoes with the main mat (10) mat 30 and a fixing member for fixing to be detachable from the main mat 10 and the secondary mat 30 is provided at one side edges facing each other, wherein the auxiliary mat 30, the main mat (10) (40 ) it consists. And contact member for contact with an upper surface of the secondary mat 30 edge and the secondary mat 30 is the main mat 10 is provided with the main mat 10, the auxiliary mat 30 edge and a position corresponding to the (50) is provided. Thus, according to this configuration, the driver and passengers can put their feet to expand the secondary mats on the main mat naked shoes as needed to assist the mat, can the driver and passengers to take a comfortable position to take off shoes, socks, there is an advantage that is prevented from being dirty sole.