A vehicular body front structure, includes: 1) a reactive force member disposed adjacent to a front edge part of a vehicular body and configured to be displaceable from i) a received state where the reactive force member is received in the vehicular body to ii) a protruding state where the reactive force member protrudes to a position higher than a surface of the vehicular body; 2) a mover mechanism disposed between the vehicular body and the reactive force member and configured to displace the reactive force member from the received state to the protruding state; and 3) a shock sensor configured to sense or calculate a collision of the vehicular body with an obstacle to thereby output a sensing signal for moving the mover mechanism.