Recently, the data processing performance of the electronic devices keep increasing whereas the size of the devices decrease, resulting in higher heat dissipation rate per unit volume and raised temperature. Therefore, effective cooling technology is a crucial requirement for a reliable operation of electronic components. In this session, we introduce some key technologies about the electronics cooling, such as heat sink, heat pipe, TEC, and TIM. Concept and design&analyze methods of such cooling modules are briefly introduced. Proper electronics cooling technology can play an important role for enhancing the reliability of the electronic devices.