The present invention relates to a method for encoding and decoding a quantized matrix and an apparatus using the same. The method for encoding a quantized matrix according to the present invention includes the steps of: determining a quantization matrix to be used for quantization and quantizing; determining the prediction scheme used for the quantization of the quantization matrix; and encoding quantization matrix information on the basis of the determined prediction scheme. In this case, the prediction scheme may be either a prediction scheme between coefficients in the quantization matrix or a quantization matrix copying scheme.