Abstract: As a multi-purpose media public building, Beijing Teisevision Center has many special equipment rooms in the basement, whose waterproofing is grade Ⅰ, as well as the layout of the foundation is complex, so the underground waterproofing is very important, especially the pile head. As the result of the comprehensive investigation and experts'demonstration, the underground waterproofing scheme of rigid-flexible combination, which is defined, which finally. All the work is done according to the specifications and the expected good effectiveness is obtained.