Building　energy　audit　and　equipment　energy-saving　assessment　are　an　important　part　of　the　building　energy　monitoring　system　in　the　construction.　This　paper　takes　a　five-star　hotel　in　Beijing　as　an　example　and　audits　the　building　energy　consumption　of　the　hotel.　By　testing　air　conditioning　chillers,　chilled　water　pumps,　cooling　water　pumps　and　other　equipments　analyses　energy-saving　potentiality　of　the　conditioning　system　and　lighting　equipments.　The　results　would　help　us　put　forward　some　sound　energy-saving　measures,　regulatory　frameworks　and　reduce　energy　equipment　consumption.