A new process for preparing poly (phenylene sulfide amide, PPSA), which is by reaction of sulfur instead of sodium sulfide as S source with dichloro benzamide (DCBA) and alkali in polar organic solvent at the atmospheric pressure (called sulfur solution route), is reported in the present paper. The influences of polymerization time, molar ratio of precursors, catalyst and solvent upon the polymer were investigated. To seek the best parameters of polymerization, orthogonal design was employed in the experiments. The results indicate that the molar ralio of precursors is the most significant effect on both of viscosity and yield of the polymer. The suitable parameters for preparing the related polymer are presented. The polymer was characterized by IR-spectrum, 1HNMR spectrum and Raman spectrum, etc.