Abstract: By using the torsional braid analysis (TBA), We have investigated the dynamic mechanical behavior of polyphenylene sulfide (PPS). The experimental results showed that a variety of factors have effects on the dynamic mechanical behavior of PPS with different molecular weight and end groups. These factors include the modes of heat treatment (solid-state Curing or melt-state curing), heating time, heat history of Samples (quenching or annealing) and the surface properties of fibres which were used as braids (glass fibre, carbon fibre, and graphite fibre, or their surface treatment). The changes in dynamic mechanical characteristics are associated with the variation of the molecular structure and supermolecular structure of PPS caused by the factors mentioned above.