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Aiming at the requirements of energy efficiency supervision in intelligent residential building and the problems of remodel difficulty and high cable laying cost in the existing heat measuring system, the ISM wireless chip was applied in heat data collection and transmission. After the research of sensor network’s structure and working principle, a wireless heat measuring node module was developed and its main circuit was designed. The SPI surface’s connection mode and data transmission method, wireless chip register read/write controlling flow, heat data’s wireless sending and receiving process was presented. The experimental results showed that the node module can not only ensure the reliability and stability of heat data’s collection and transmission but also improve the flexibilitySand applicability of heat measuring sensor network, which provided an economical and practical measure for intelligent building’s energy data collection, transmission and management.