The mechanics, deformation and permeability of full graded concrete with phosphorus slag power were studied， and contrasted with those of wet screened concrete. Results show as follows: Both compressive strengths have a little difference; Tensile strength of the former is 60% to 73% of the later; The compressive elastic modulus of the large specimen is higher than that of the small specimen; The effect of large aggregates on ultimate tensile value is remarkable than on Poisson’s ratio； Both impermeability grades at 28 d all reach W10, but the former can better reflect the true impermeability of large volume concrete.