A front part body structure of a vehicle, includes: an upper frame which is extended in a longitudinal direction of the vehicle, one end of which is joined to a front pillar, and which includes an inner panel and an outer panel, the outer panel that is divided in a dividing part in the longitudinal direction of the vehicle; and a first partition wall which is provided between the inner panel and the outer panel, one end of which is joined to the inner panel, and the other end of which is fastened and fixed to the dividing part of the outer panel by means of a fastening member.