Turbo码由于很好地应用了香农信道编码定理中的随机性编译码条件而获得了几乎接近香农理论极限的性能。其中编、译码过程中交织器的设计是实现随机性的核心。本文主要介绍了分块交织器和伪随机交织器的设计 ,并提出一种两者相结合的新的交织器类型。根据仿真结果 ,从理论上分析了三种交织器的优缺点及在不同通信领域中应用Turbo码时选取交织器的原则。 Turbo codes gain performance that is close to the Shannon’s theoretical limit due to the well-applied random codec conditions in Shannon’s channel coding theorem. Among them, the design of interleaver in coding and decoding process is the core of randomness. This paper mainly introduces the design of block interleaver and pseudo-random interleaver, and proposes a new type of interleaver combining the two. According to the simulation results, the advantages and disadvantages of the three kinds of interleaver are theoretically analyzed and the principle of selecting the interleaver when applying Turbo codes in different communication fields is proposed.