A digital language teaching system is disclosed, in which through an audio control manner, the learner, by utilizing a learning sub-machine, can focus on listening and speaking practice under a simple hardware control and operation, so that the teaching staff and the learner can have a more direct and faster interaction for improving learning efficiency. Moreover, through the output devices of the video device and teaching providing the learner the teaching image and the interactive teaching pictures, the video learning manner can be provided to the learner through the supplemental multimedia teaching materials, so that the teaching staff can teach the learners in accordance with their aptitudes, and the learner can find the most suitable learning method.