Self-leakage is defined as a subjective sense that one's inner state is leaking out for others to know without verbal expression, causing anticipation of negative outcomes. A similar phenomenon is egorrhea symptoms of “taijin kyofusho” (social phobia). The mechanism of self-leakage has not yet been hypothesized, and we aimed at proposing a causal model in the present study. Path analysis suggested that self-leakage was partly caused by the tendency to have delusional ideations and trait anxiety, i.e., interpretation bias. But, contrary to our prediction, social anxiety, fear of negative evaluation, and public self-consciousness did not have enough influence on self-leakage.