The title compound 5,10,15,20-tetrakis（4-chlorophenyl）porphyrin was synthesized and structurally characterized by X-ray single-crystal diffraction method. Crystal data： triclinic, space group P, Z=1, C50H32Cl4N4, Mr=830.60, a=6.4316（13）, b=11.322（2）, c=13.833（3） , α =91.44（3）, β=91.06（2）, γ=92.67（3）°, V=1005.7（3）3 , Dc=1.371 g/cm3 , μ（MoKα）=0.34 mm-1 , F（000）=428, R=0.0563 and wR=0.0867 for 2712 observed reflections with I 〉 2σ（I）. X-ray analysis reveals the phenyl rings and the pyrrole rings are not in the same plane. The dihedral angles between adjacent phenyl rings and pyrrole rings are 66.1 and 66.8°, respectively.
