Based on three different methods of solid-phase synthesis， citric acid cerium heat stabilizers， with three different methods of cerium primarily with citric acid calcium stearate heat stabilizers for collaborative， PVC， determination on the thermal stability of Congo red test Experimental results show that: the pure component of PVC cerium citric acid in the thermal stability of 3% for better quality of PVC， With calcium stearate coordinated with low proportion of solid phase synthesis， with Using infrared spectrum of heat stabilizers mechanism research shows that， after joining stabilizer， PVC crystallinity， Keywords: solid-phase synthesis， Ce citric acid， Thermal stability， Congo red， Polyvinyl chloride (PVC)
