Taking student apartments (the second period of E area) in Wenzhou University as a pilot project, designed an energy efficient envelope structure for self-insulation wall made of composite ceramic concrete block. Conducted on-site tests on its thermal performance and made an analysis and evaluation on the tested data. The results show that：According to DB33/1015—2003＂Design standards for energy efficiency of residential buildings＂of Zhejiang province, the project has reached the design requirement of 50% energy saving.