The invention discloses a 
parallel computing method capable of expanding a precision Logistic 
chaotic sequence, comprising the following steps: (1) saving initial parameters x0 and mu integer quantization to an one-dimensional array, and arranging the precision required to be achieved or designating iterative times; (2) the first part of the parallel 
computational algorithm x=x*(1-x): utilizing amatrix to save and compute the intermediate result, modifying the length of a 
dynamic array and saving the computation result to the 
dynamic array; (3) the second part of the parallel 
computational algorithm x=mu*x: saving the computation result to the 
dynamic array; (4) and if the precision or the iterative times achieves the required value, acquiring the 
chaotic sequence in the dynamic array, thus the computation is finished, and otherwise, transferring to step (2). The method of the invention fully utilizes the properties of a 
chaotic system, provides the chaotic sequence of a more 
expansive mapping space, can be used in the fields of secret communication, information safety and so on, and is especially suitable for 
encryption, storage and network transmission of graph, image and 
multimedia and other information.