Front vehicle body structure, wherein comprising a front longitudinal beam, a dash panel, a front floor and a side longitudinal beam connected to the front floor; wherein, the dash panel is used for separating a vehicle room from an engine room, and the lower end of the dash panel is provided with a rear edge portion which extends towards the rear of a vehicle body and is connected to the front floor; the front longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section connected to the longitudinal beam front section; the longitudinal beam front section extends along a front-back direction of the vehicle body, and the longitudinal beam front section is arranged on the front side of the dash panel and connected to the dash panel; the longitudinal beam rear section extends along the front-back direction of the vehicle body and at least extends to the lower side of the rear edge portion, and the longitudinal beam rear section is connected to a lower panel face of the rear edge portion; and the side longitudinal beam is arranged on the side, in the width direction of the vehicle body, of the front floor and separately connected to the dash panel and the longitudinal beam rear section, so that the side longitudinal beam, the dash panel and the longitudinal beam rear section form a force transmission closed-loop structure, the front vehicle body structure being characterised in that it further comprises a cowl cross beam, and the cowl cross beam extends along the width direction of the vehicle body and is connected to the dash panel; the cowl cross beam comprises a cross beam top plate, two cross beam bottom plates and two cross beam vertical plates used for separately being connected to the cross beam top plate and the cross beam bottom plates; and the two cross beam bottom plates are respectively connected to the dash panel in a lap joint mode, wherein the front vehicle body structure further comprises a middle channel which protrudes upwards and extends along the front-back direction of the vehicle body, and the middle channel is provided with a middle channel lap joint portion which is separately connected to an upper panel face of the rear edge portion and an upper floor face of the front floor in a lap joint mode, wherein the front vehicle body structure further comprises a first reinforcing piece which is arranged on the middle channel and connected to the middle channel, and the first reinforcing piece is further provided with a first lap joint portion which is connected to the dash panel in a lap joint mode; the projection area of the first lap joint portion projected on the dash panel coincides with or partially coincides with the projection area of the cross beam bottom plate projected on the dash panel. the dash panel is used for separating a vehicle room from an engine room, and the lower end of the dash panel is provided with a rear edge portion which extends towards the rear of a vehicle body and is connected to the front floor; the front longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section connected to the longitudinal beam front section; the longitudinal beam front section extends along a front-back direction of the vehicle body, and the longitudinal beam front section is arranged on the front side of the dash panel and connected to the dash panel; the longitudinal beam rear section extends along the front-back direction of the vehicle body and at least extends to the lower side of the rear edge portion, and the longitudinal beam rear section is connected to a lower panel face of the rear edge portion; and the side longitudinal beam is arranged on the side, in the width direction of the vehicle body, of the front floor and separately connected to the dash panel and the longitudinal beam rear section, so that the side longitudinal beam, the dash panel and the longitudinal beam rear section form a force transmission closed-loop structure, the front vehicle body structure being characterised in that it further comprises a cowl cross beam, and the cowl cross beam extends along the width direction of the vehicle body and is connected to the dash panel; the cowl cross beam comprises a cross beam top plate, two cross beam bottom plates and two cross beam vertical plates used for separately being connected to the cross beam top plate and the cross beam bottom plates; and the two cross beam bottom plates are respectively connected to the dash panel in a lap joint mode, wherein the front vehicle body structure further comprises a middle channel which protrudes upwards and extends along the front-back direction of the vehicle body, and the middle channel is provided with a middle channel lap joint portion which is separately connected to an upper panel face of the rear edge portion and an upper floor face of the front floor in a lap joint mode, wherein the front vehicle body structure further comprises a first reinforcing piece which is arranged on the middle channel and connected to the middle channel, and the first reinforcing piece is further provided with a first lap joint portion which is connected to the dash panel in a lap joint mode; the projection area of the first lap joint portion projected on the dash panel coincides with or partially coincides with the projection area of the cross beam bottom plate projected on the dash panel.