The invention provides a voice quality evaluating method and a voice quality evaluating device, used for improving the flexibility and universal applicability when voice quality evaluating is carriedout. The method comprises the following steps: extracting a feature identifier set of to-be-evaluated signals, wherein the feature identifier set is used for indicating the features of the to-be-evaluated signals; carrying out integration and reconstruction on the feature identifier set, thus obtaining a strong feature identifier set; and inputting the strong feature identifier set into a perception mapping model, thus determining the quality evaluating value of the to-be-evaluated signals, wherein the perception mapping model is used for indicating the mapping relation between the features ofthe to-be-evaluated signals and the quality evaluating value.