To　discuss　the　effect　of　energy　saving　of　heat-reflective　coating　on　building,　the　heat　gain　of　exterior　building　envelope　in　summer　and　winter　in　Beijing　has　been　calculated.　The　results　indicated　that　the　higher　the　reflectivity　of　coating,　the　better　the　energy　saving　effect.　The　energy　consumption　of　roof　and　different　direction　walls　were　analyzed.　The　energy　saving　effect　on　roof　is　the　best,　however　the　effect　is　not　obvious　on　the　east　and　west　walls.　The　heat　reflective　coating　has　no　effect　on　north　wall　but　exhibits　effect　on　south　wall.　The　energy　saving　effect　of　brick　red　heat-reflective　coating　is　not　obvious　compared　with　the　common　brick　red　coating.　©　(2014)　Trans　Tech　Publications,　Switzerland.