A front vehicle body structure includes: lower side members extended in a length direction of a vehicle, and disposed at left and right sides in a width direction of the vehicle; a dash lower cross reinforcement member extended in the width direction of the vehicle, and to which a rear end of each of the front lower side members in the length direction of the vehicle is coupled; and joints to which the rear ends of the left and right front lower side members and the dash lower cross reinforcement member are coupled, which can result in enhanced structural rigidity of the vehicle front body.