Abstract: Mirror neurons have profound influence on multiple aspects of human including action understanding, speech and language, empathy and so on. Motor theory of speech perception has verified the important role of mirror nervous system in human body. Based on this, the electroencephalography (EEG) of the subjects was collected in the form of pictures, audios and voice mouth action videos when they read some different Chinese characters silently. The EEG topographic maps were generated by common spatial pattern (CSP), and the classification accuracy of different states of three stimuli was obtained by using support vector machine (SVM). The results showed that with the deepening of sensory stimulation in dimension, the motor cortices of the subjects were significantly activated, the activated area was more concentrated, and the classification accuracy was improved accordingly. The classification accuracy of two words of the audio and video stimuli increased by an average of 2.5% and 4.3% respectively compared that with image stimulus. This study will lay the groundwork for the clinical treatment of brain injury in the future.