Abstract: Interleaver design plays an important role in Turbo code theory, and high-rate turbo codes have some special requirements on interleavers. Based on analysis of five key factors which have influences on the design of interleavers, a study is made on how to design a promising interleaver for turbo codes. Three commonly used mapping functions of deterministic interleavers are discussed, and their odd-even design schemes for high-rate turbo codes are presented. Computer simulation results show that the three odd-even interleavers are easy to realize, and with them, satisfactory performances can be obtained over an additive White Gaussian Noise in high-rate turbo code systems.