16. The method as claimed in claim 15 , wherein the method further includes: performing, by a model trainer, a model training on the at least one speech segment marked as the unknown word, and obtain at least one new word model.
17. The method as claimed in claim 16 , wherein the method further includes: adding, by a word set editor, the at least one new word model to a database formed by a plurality of acoustic models; and establishing, in a word set, a connection of the at least one new word model according to the at least one preset word included in at least one preset word content so that the new word model being referenced by the speech recognition module during the speech recognition process, wherein the at least one preset word content includes at least one model name or model index of the plurality of acoustic models corresponding to the preset word, and the at least one model name or model index of the plurality of acoustic models is referenced by the speech recognition module for a preset word recognition.