In recent years，spatial audio technology has been widely used and developed in a variety of fields. Many studies have been focused on the flexibility of creating an immersive spatial auditory experience. In this review， the advantages and disadvantages of the state-of-art approach have been analyzed. It mainly involves the dimension and representation of sound field， the reproduction of sound field， and corresponding room equalization technology. Finally， we discuss the current problems and predict possible promising directions for this research topic.