This study investigated the effect of communication–types on the relationship between the conversation–time and marital–satisfaction. This surveyed 250 married adults to measure the checklist of communication–types, the test of marital–satisfaction, and an average time on couple–communication. The results are as follows. First, comparing male and female groups, men were significantly higher than women only in super–reasonable type, while there was little difference in other communication–types and marital–satisfaction. Second, conversation–time was negatively correlated with distracting, super–reasonable type, and marital–dissatisfaction, and was positively correlated with congruent type. Third, as a result of verifying the mediating effect of communication–type on the relationship between conversation–time and marital–satisfaction based on the correlation, there was a partial–mediating–effect in congruent, distracting types, and there was no mediating effect in super–reasonable. These results suggest that communication–type is an important variable in the relationship between conversation–time and marital–satisfaction, and the significance/limitations of this study and further studies were discussed.