To provide a speech processing unit and a speech processing method for searching information that can be acquired from a communication network, based on a word included in speech by recognizing the speech.

The speech processing unit comprises a microphone 10, a speech recognition processor 22, a speech recognition memory 23, a syntax analysis processor 24, a dictionary memory 25, an information searching processor 26, a communication processor 27, a data accumulation memory 28, and a display unit 30. The speech recognition processor 22 converts a speech signal inputted from the microphone 10 to character string data (text data), the syntax analysis processor 24 extracts only the word of a noun from the text data, the information searching processor 26 and the communication processor 27 allow a server device connected to the communication network to search URL information related to the word of the extracted noun via a telephone line, the data accumulation memory 28 stores the text data in association with the extracted noun and a search result (URL information) corresponding to the word and the text data generated by the speech recognition processor 22, and a text generated by the speech recognition processor 22 is displayed on the display screen of the display section 30. In that case, the word of the noun in the text is linked to the searched URL information for displaying.