Abstract: To explore relations between the character behavior and the EEG of people, experimenters EEG was measured during the process of Uchida-Kraepelin Test(UK test) and the EEG data of different experimenters in character is analyzed based on the three characters: startup ability, excitability and changeability. Relations between the character behavior and the EEG were explored by contrasting the EEG energy distribution of especial frequency band during the process of UK test. The results indicated that the character of startup ability is mainly related to the energy of <em<β</em< wave of EEG at the beginning of up-part and down-part of UK test; the character of changeability is mainly related to the fluctuation of <em<β</em< wave energy of EEG during the process of UK test; the character of excitability is mainly related to the magnitude and changing uptrend of <em<α</em< wave energy of EEG during the process of UK test.