To estimate the fire productivity to fire concrete works by 100-millimeters high explosive shell of certain type infantry combat tank, analyze fire error of 100-millimeters high explosive shell, analyze and calculate kill mechanization of ammunition and hit probability; and draw the law about the fire productivity to fire concrete works by 100-millimeters high explosive shell through simulation, then research which fire fashion should be taken when infantry combat tank fire concrete works. As it turns out, fire productivity is difference in different firing distant, concentrate-firing should be taken in the certain shooting distant, and fire productivity is different to varied kind concrete works.