To meet the requirement of terminal impact angle constraint of penetrating bombs to enhance damage, the terminal optimal trajectory shaping law with terminal impact angle and terminal angle of attack constraints was proposed. By analysis of the flight-control system, the angle-of-attack control arithmetic was designed to assure the convergence of terminal angle of attack. Through mathematical simulations, the influence of the different gravity compensation degrees on guidance performance was discussed. The derived guidance law was tested under the release conditions of different expected impact angles at low and high altitude. The simulation results show that the trajectory shaping law with normal gravity compensation has some strong effectiveness and practicability to increase damage, when the penetrating bombs attack a fixed target.