The purpose of this study was to investigate effects of maladaptive personality (borderline personality, narcissistic personality, and dependent personality) and conflict behavior on marital adjustment(dyadic satisfaction, dyadic consensus, dyadic cohesion, and affectional expression) among married women. Subjects in this study were 725 married women who lived in Cheong-buk, in Gyeonggi province, Korea. Data were analyzed by the methods of frequency, percentage, Cronbach's ${\alpha}$, and factor analysis, Pearson's correlation, and hierarchical regression using SPSS-WIN version 12.0. The results of this study were as follows: 1) the less borderline personality was perceived, the more narcissistic personality was perceived, In addition, a greater perceived amount of destructive conflict behavior of wives was linked to highdyadic satisfaction in the wives'. Wives' destructive conflict- behavior was the most important parameter to predict dyadic satisfaction. 2) The less borderline personality was perceived, the less dependent personality was perceived, while the more narcissistic personality was perceived, the more destructive conflict behavior of husbands was perceived, with the, wives' incidence of dyadic consensus appearing high. Husbands' destructive conflict behavior was the most important parameter to predict a dyadic consensus. 3) The less borderline personality was perceived, the more narcissistic personality was perceived, In addition, more destructive conflict behavior of the husbands was linked to highdyadic cohesion in the wives'. Husbands' destructive conflict behavior was the most important to predict dyadic cohesion relatively. 4) The more destructive conflict behavior of wives was perceived, the higher the wives' affectional expression appeared. The wives' destructive conflict behavior was the most important parameter to predict affectional expression.