This research adopted short films technique to evoke related mood and used positive and negative emotional events as the judgment task. Under the premise of the personality controlled, the research explored that whether the mood-congruent effects existed or not in the probability judgment of college students when dealing with the future events in different mood conditions. The between-subject design was applied in this study, in which the mood (pleasure or sad) and gender (male or female) were taken as independent variables, while the probability judgment of subjects when dealing with the emotional events in the future was taken as dependent variable. Three procedures were carried out in this experiment: In the first stage, 200 college students were required to fulfill the personality test and mood measurement, and then 44 subjects meeting requirements were selected and divided into two groups coessentially. In the second stage, these two groups of subjects were brought into different mood one week later by watching different emotional movie clips, so that the pleasure mood group and sad mood group were formed. After the movie, the subjects were asked to make a self-evaluation about their emotion (fill out PANAS). In the third stage, the subjects made probability judgments of future events. The results showed: (1) The probability judgment of positive future events made by pleasure mood group was higher than that by sad mood group, which showed a significant difference (p﹤0.05). (2) The probability judgment of negative future events made by pleasure mood group was lower than that by sad mood group, which showed a significant difference (p﹤0.05). (3) There has no gender difference in the probability judgment of future events no matter which mood subjects were in (p>0.05). The results supported the suppose that mood would influence the probability judgment of future events, which is to say that pleasure mood would increase the tendency of making positive judgments and sad mood would increase the tendency of making negative judgments. The conclusion that there was a congruent effect between the mood evoked and the judgment of future events further enriched the hypothesis of mood-congruent effects.