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Underground communication is a hot and difficult research all the time, there are a lot of techniques about it. This paper according to the characteristics of collision-free, Existence of multi-path wireless channel and multiple access interference in the mines, we propose an improved non-woven technology, frequency hopping sequence collision zone technology, this is the innovation of this paper and the key part. In the article, the collision-zone hopping the structure based on an improved interleaving process is given in detail. Finally, the mathematical proof and algorithm design model program.