The present invention discloses a tinnitus diagnosing and testing device, characterized in that the device comprises: all-digital audio and tone signal synthesis generators for generating audio and tone signals of all kinds of tones, melodies, rhythms and loudness required for a tinnitus diagnosis a control module for controlling the all-digital audio and tone signal synthesis generators to assess tinnitus and output the audio and tone signal of tinnitus diagnosis wherein the all-digital audio and tone signal synthesis generators includes a composite sound signal generating module, a pure tone signal generating module, a noise signal generating module and a record signal generating module, which respectively generate a specific audio and tone signal.