The invention discloses a vector quantization method for sorting and rearranging a code book and a vector quantizer thereof. The method comprises the following steps of: in an encoding process, inputting a residual vector to sort according to sorting information, determining a sub-code book search range in a sorted and rearranged code book in an encoder and determining a vector quantization valuein a sub-code book; and in a decoding process, determining the reconstruction vector of the input residual vector in the sorted and rearranged code book of a decoder according to a quantization indexsent to a decoder end by a channel. Before quantization, the code book is sorted previously by using a code book sorting algorithm, and the sorting information is stored in a sorter. The sorter, a sorted and rearranged code book storage unit and a quantization module in the encoder in the vector quantizer, a sorted and rearranged code book storage unit and a decoding module in the decoder are keycomponents. In the invention, the sorter information is not necessary to be sent in a channel and does not occupy a quantization bit, the code word search range is limited in the sub-code book of thesorted and arranged code book in the encoding process, the time complexity of the vector quantizer is decreased, and the effect of transparent quantization is achieved.