The invention relates to a voice code method and relative input device and sensor. Wherein, said voice code comprises syllable code, syllable time and syllable rhythm; the syllable code comprises initial consonant code, last consonant cod, pitch, children voice code, and paralinguistics information code. For making the user can express mind as motion, the invention selects the motion of people, which can express all information of syllable code, to be decoded into motion code; when user uses input device to make a motion, several information as initial consonant, etc, can be expressed; and deaf people inputs said sound code into the sound compose device to communicate with other people; the voice code can be input into word process device can complete the work input; and the blinder via said voice code input device can operate the computer via voice code. With said invention, user can sense the voice code without listening and seeing.