With the change of people's aesthetic standards,traditional performance buildings can no longer meet the needs of diverse cultural activities and audience experience,and it is necessary to carry out spatial composite design for viewing buildings.Based on this,this paper takes the composite design of architectural space as the research object,analyzes the functional composition of the performance building,and optimizes the composite design of the performance building space from the aspects of space layout design,composite design of use time and technology application design,in order to create an architecture that meets the needs of contemporary people.