Importance of sustainale development gets more and more obvious and sustainable building technologies are desireable. Building cooling, heting, and power (BCHP ) technology has very high efficiency of energy utilization due to the utilization of distributed power generation and heat recovery, thus is a promising energy conservation technology. BCHP can reduce pollutants emission and thus protects the envioment besides improving IAQ and increasing reliability of building energy supply. In this paper, BCHP technology and its sustainable characteristics regarding energy and environment were analyzed. It was concluded that BCHP is a kind of sustainable technology and developing BCHP can promote energy and environmental sustainable development.