Abstract: A front body structure of a vehicle and a method of assembling the front vehicle body in which a nose unit having at least both a heavyweight member such as a radiator, etc. and a unit base including shroud members is mounted to a vehicle front body having front side frames forming a closed sectional construction on both right and left sides. A cross member extending in the widthwise direction of the vehicle body is provided between the right and left front side frames of the vehicle body and a support member for supporting the heavyweight member is provided on the nose unit side. The support member is supported by a cross member wherein the nose unit is mounted on the vehicle body.