Several cylinder models were established to simplify the design of temperature control package. Real temperature control package was transfer to different cylinder models to simplify design. Thermal transfer analysis and simulation were carried out using ANSYS. The relative error of temperature control time between transfer models and real temperature control system were used to select the best cylinder model. The result showed that the one who's inside volume and thickness is equal with real cubic temperature control package can reflect the real heat transfer process best. The purpose was to provide reference for reducing cost and optimizing temperature control package design.