The invention discloses a method for dyeing polyphenylene sulfide fiber or fabric. The method comprises the following steps: treating the polyphenylene sulfide fiber or fabric, soaking the polyphenylene sulfide fiber or fabric into a high-temperature high-pressure dyeing machine filled with dyeing solution in a bath ratio of 1: 10-50, heating the polyphenylene sulfide fiber or fabric to between 100 and 140 DEG C at a heating sped of 0.5 to 5 DEG C per minute, preserving the heat and dyeing the polyphenylene sulfide fiber or fabric for 10 to 60 minutes, and performing reductive cleaning, water washing and drying on the polyphenylene sulfide fiber or fabric. Based on the weight of the polyphenylene sulfide fiber or fabric, the dyeing solution comprises 0.5 to 5 percent of disperse dye, 1 to8g/L of dyeing carrier, 0 to 2g/L of pH adjustor, 0 to 5g/L of leveling agent, 0 to 1g/L of chelated dispersing agent and diluent. The method can successfully dye the polyphenylene sulfide fiber or fabric, has the advantages of high dyeing rate, deep and thick dyed color, good color fastness, soft hand feeling, low dyeing cost and simple and feasible use and operation, can be expanded in application of civilian textiles, and is convenient for popularization and application.