The previous researches on feedback mainly emphasize that how ERPs which relate to feedback, such as FRN, P300 etc. change with the changes of feedback’s value, quantity and probability (expected). Most of the researches were conducted in gambling games which were experimental tasks, and the feedback which was in form of figure indicated winning or losing money. There have been many researches investigating the cognitive process before executing deceptive response, but less attention has been paid to how people perceive the outcomes of deception. In real life, however, it’s just the outcomes that make people have special mental process when they lie and make the processing to deceptive outcomes be different from the general processing. In the lie-detection paradigm of this research, positive and negative feedback represent “lie-escaped” and “lie-caught” respectively. This kind of feedback may need more complicated cognitive process than general feedback does. We speculate that the cognitive and neural mechanism processing the outcomes of deception may be different from the expectation in usual theories. In order to exploring how people conduct cognitive process to the outcomes of deception, this research tries to analyze the ERPs evoked by the feedback in a lie-detection paradigm. Event-related brain potentials (ERPs) were recorded when 17 subjects did this lie-detection task. We mainly analyzed ERPs evoked by the two sorts of feedbacks following deceptive response. The experimental result showed that three kinds of ERPs were evoked by feedbacks following two sorts of deceptive responses, they were P200-300、P300 and N500 respectively, and the negative feedback (“-2”) which indicated “lie-caught” did not evoke FRN. The feedback indicating “lie-caught” evoked larger amplitude of P200-300 than the feedback indicating “lie-escaped” did, while the two evoked similar amplitude of P300, which showed that the latter evoked larger amplitude of N500 than the former. The results revealed that, in this research, FRN seemed to reflect instant and motivational evaluation to feedback, might having no necessary relations with learning process. When processing the feedbacks which indicate the outcomes of deception, P200-300 was distinct from P300. P200-300 might be sensitive to the consequences of stimulus encoding (positive or negative), thinking the feedback indicating “lie-caught” was more negative than the feedback indicating “lie-escaped”; while P300 might be sensitive to the subjective significance, thinking the two sorts of feedbacks are similar in subjective significance. P300 represented the process to the subjective significance of feedbacks, and its sensibility to the number of feedback might because: large numbers of feedbacks might have more significance of rewards and penalties. During the process to outcomes of lie-detection, N500 might reflect cortical excitability, and “lie-escaped” might be more exciting than “lie-caught”.