The invention relates to the vehicle field, and discloses a vehicle body front structure comprising a front crashproof beam, a longitudinal beam front section, a front subframe, a water tank upper crossbeam, a water tank lower crossbeam, and water tank columns; the front end of the water tank column is connected with the front crashproof beam; the rear end of the water tank column is connected with the longitudinal beam front section through a first connecting plate; the front subframe is provided with a second connecting plate; a first X-direction mounting hole is arranged on the bottom of the first connecting plate; a position, opposite to the first X-direction mounting hole, on the top of the second connecting plate is provided with a second X-direction mounting hole; the first and second connecting plates are fixedly connected by using a fastener to penetrate the first and second X-direction mounting holes; an existing front subframe complex Z-direction mounting structure is converted into the simpler X-direction mounting structure, thus greatly simplifying the structure, improving space utilization rate, mitigating vehicle body front portion weight, and further improving longitudinal beam front section direct impact energy-absorbing effect.