The purpose of current preliminary investigation was to examine the relationship between depression and metacognition and the demographic characteristics. In this study, 70 social network service questionnaires(convenience sampling) were administered to the subjects through evaluation of the metacognition and the depression, and 57 responses were analyzed except 13 incomplete responses. The data collection period was from December 29, 2017 to January 9, 2018. The assessment tools used for the measurements were metacognitions questionnaire-30 and Beck Depression Inventory. The independent t-test was used to identify the metacognition and the depression according to the demographic characteristics of the respondents. The Pearson correlation analysis was used to identify correlations among respondents' the age, the metacognition, and the depression. In gender, marital status, and education level, the metacognition and the depression were not significantly different(p>.05). In the education level, however, ≥ graduate school was significantly higher than the university graduation in subcategory of the metacognition (cognitive confidence and cognitive self-consciousness)(p<.05). In the correlation analysis, the metacognition was significantly correlated with age and the depression(p<.05). The results of this preliminary study found the relationship between the metacognition and the depression, and can be used as basis for the development of a metacognitive treatment program for patients with psychological problems.