The invention discloses an implementation method for a low-complexity polarization code folding hardware framework based on k-segment decomposition. The method comprises the following steps of S1.decomposing an n-stage SC decoding algorithm into k segments, wherein k is a factor of n and meets a relation that n is equal to kp, p is an integer, the code length of a polarization code is N and N is equal to 2n; S2.configuring (k-1) secondary decoders for the decomposed k-segment SC decoding algorithm and computing a folding set of each segment, wherein the number of decoding stages of each decoder is p stage; and S3.constructing the polarization code folding hardware framework according to the folding set of each segment, which is obtained in the step S2. According to the method, the hardware complexity is greatly reduced, the hardware resource consumption is reduced and the node resource utilization rate is increased.