In this study, we show that the possibilities of a system through simulation of flexible thermoelectric cooling systems that adopts a new type of heat conduction mechanism applicable to human body based on bulk thermoelectric elements. When the cooling system is applied to the human body, the human body controls the temperature of the body through various mechanisms and this necessitates the need for modeling of the human body that is required to get the cooling performance. However, it is not appropriate to model the entire human body to get the cooling performance of wearable cooling system when it is applied to human body. Thus, we suggest a new design of simplified human body that is suitable for wearable thermoelectric cooling system. A newly designed simplified human modeling can also be applied to a variety of wearable devices