Objective To explore the characteristics of automatic cognitive processing of identity information as self-related information using eye tracking technology.Methods A total of 95 students from Air Force Medical University were recruited from Jul. to Oct. 2020, including 62 males and 33 females, aged 18-24 years old, with an average age of (20.71±1.53) years old, all right-handed. Through Go/NoGo visual search task combined with eye tracking technology, a single-factor general linear model was used to compare the differences of eye movement characteristics (gaze points and gaze duration) between highly self-related information and lowly self-related information after relevance evaluation of identity words.Results The relevance evaluation results of identity words showed that, for the recruited students, the identity words of students (experiment, student, and internship) were highly self-related information, and the identity words of soldiers (sentry, soldier, and sentinel) were lowly self-related information. Univariate general linear model analysis showed that the eye movement characteristics of self-related information had a significant marginal main effect. The gaze points and gaze duration of highly self-related information were marginally smaller than those of lowly self-related information (1.80±0.67 vs 1.87±0.68 and [499.36±269.70] ms vs [525.58±278.17] ms, F＝3.83 and 3.55, P＝0.052 and 0.059). The main effect analysis showed that the gaze points and gaze duration in the upper left quadrant (P1) were the highest compared with the other 3 areas (all P < 0.01); the gaze points and gaze duration in the upper right quadrant (P2) were higher than those in the lower left quadrant (P4) (both P < 0.01); the gaze points in the P2 were more than those in the lower right quadrant (P3) (P < 0.01); and the gaze duration in the P3 was significantly longer than that in the P4 (P < 0.05).Conclusion Individual identity information, as highly self-related information, may have cognitive characteristics of automated processing. At the same time, in an overall gaze space, there is a phenomenon that information processing decreases sequentially from left to right and from top to bottom.