As for the application effects of compensator,the simulation analysis of heating effect and energy consumption under two compensation modes is given,and the optimization method is discussed.The result shows that,the current operation mode of the climate compensator can help improve the indoor thermal environment condition,but the excessive heating and room temperature fluctuation still exist.The paper then gives some optimization advices.When regulating water supply temperature,not only the outdoor temperature,but also the internal heat gains as occupant,lighting and electric equipment,solar heat gains,as well as heat storage in envelops should be considered.