The purpose of the study was to construct college student multidimensional romantic jealousy scale and examined the psychometric properties. This study conducted a questionnaire survey with 400 college students from Kaohsiung as the empirical research subjects. Data obtained from the survey were analyzed by exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and structural equation modeling (SEM). Statistical analysis yielded the following results. (1) College student multidimensional romantic jealousy scale included three dimensions: cognitive jealousy, emotional jealousy, and behavioral jealousy. (2) The fit of one-second- order-factor and three-first-order-factor model for romantic jealousy was acceptable. (3) The model had good convergent validity, discriminant validity, criterion-related validity, and cross-validation. The college student multidimensional romantic jealousy scale demonstrated good psychometric properties.