Abstract: A kind of associative encoding algorithm based on Clustering Fuzzy expansion is put forward. The network unit structure of the extended fuzzy clustering of data based on probability and statistics is constructed.According to probability and statistics theory, data structure belonging to the code rate is designed, and homomorphism inter cell code under the construction of compensation is obtained. Fuzzy clustering and association code of function expansion are constructd and characteristics of input data collection node set a collected.Using fuzzy clustering algorithm to obtain the expansion of the average correlation class and between features, network coding structure has been a two-way link multi processor cluster networking framework, implementation of improved fuzzy association code extension clustering algorithm. The simulation results show that the algorithm has good clustering fuzzy expansion effect, improves the performance of data association code of secrecy and block performance, and data encryption is better.