摘要：With current resources shortages and environmental destruction,one of the important methods in building energy saving is to develop passive design and technologies. "E-concave",which is one of the entries in the solar Decathlon 2013,has the core concepts of"Saving",Comfort","Unitization"and"Technology"and brings passive strategies( layout,insulation,daylighting,ventilation,material,etc.) into the design. This article aims to explore the utilization of passive design in solar detached houses through the studies on E-concave and tries to be an example to the development of sustainable buildings in China.