This study was conducted to explore the knowledge of sex, attitude toward sex, sexual satisfaction, the differences of these variables according to the general characteristics, and the correlation of these variables in married women. The data were collected from March 25 to May 20, 2000 by using a mailed questionnaire. The number of subjects were 228 married women in the area of Seoul. Kyunggi-Do and Chungchung-Do. The questionnaire consisted of 67 items including item concerning general characteristics, knowledge of sex, attitude toward sex, and sexual satisfaction. The results were as follows : 1. The mean score and standard deviation of the knowledge of sex was $13.76\pm3.01$ with the range from 5 to 20. The mean score and standard deviation of the attitude toward sex was $57.28\pm9.65$ with the range from 31 to 85 score. The mean score and standard deviation of the sexual satisfaction was $33.15\pm6.54$ with the range from 17 to 48 score 2. The variables influencing on knowledge of sex were children number, women's education level. husband's education level. women's job, economic level. and menstruation status. 3. The variables influencing attitude toward the sex were women's age, husband's age, marriage term, children number, women's religion, economic level. menstruation status, and information acquirement about sex. 4. The variables influencing sexual satisfaction were women's age, husband's age, economic level. menstruation status, and information acquirement about sex. 5. Regarding relationship among the knowledge of sex, the attitude toward sex and the sexual satisfaction, those respondents who had more knowledge of sex had more open attitude toward sex and those respondents who had more open attitude toward sex had higher sexual satisfaction.