A front vehicle body reinforcing structure is provided. The structure includes a front side member that extends in the length direction and is disposed at both left and right sides in the width direction and a wheel housing panel that houses a wheel, disposed external to the front side member in the width direction and coupled with the front side member. A dash panel extends in the width and height directions, and compartmentalizing an engine and occupant compartment. A front pillar extends in the length and height directions and is coupled with the wheel housing panel and the dash panel. Additionally, a cowl cross member extends in the width direction and includes both end portions coupled to the front pillar and the wheel housing panel. A first reinforcing member extends in the length and height directions and is coupled to the wheel housing panel and the front pillar vehicle.