In order to enhance the performance of electrocaloric refrigeration, the translational fluidic active electrocaloric regenerator (AER) was constructed using P(VDF-TrFE-CFE) terpolymer as the electrocaloric material. A two-dimensional model of this AER was established for the performance simulation based on COMSOL Multiphysics. Through the analysis of the fixed working condition and variable parameters, the influencing factors of electrocaloric refrigeration were discussed. It has been found that the thermal conductivity of material is a key factor that restricts the exertion of electrocaloric effect. The poor thermal conductivity not only leads to the inefficiency of heat transfer between fluid and materials when electric field is on, but also causes temperature crossover. This results in the phenomenon that the center of materials which cannot be cooled down effectively when the electric field is off seizes the cooling capacity of electrocaloric effect.