The objective of this research were; 1) To study clothing buying habits online via Facebook and Instagram. 2) To study the comparison of buying clothes online via Facebook and Instagram. The research model is quantitative research. Use the theory of demography. Theory about consumer behavior The theory about marketing mix and marketing channel theory is a research framework. The research area is Nakhon Pathom Rajabhat University. The samples were people buy 386 sets online clothes in Facebook and Instagram before. Use a simple random selection method. The research instruments were 1) frequency 2) percentage and 3) arithmetic mean. Data were analyzed using quantitative statistics. Independent Simple T-Test ANOVA. The research found that most of the respondents were between 18-28 years old. The educational level of the sample group found that it was  Bachelor's Degree  And most are students, whose average monthly income is between 5,001 - 10,000 baht. The hypothesis testing found that demographic factors are age, education level  Different occupations  It does not affect the decision to buy clothes online via Facebook and Instagram. Most respondents prefer buying clothes online via Facebook rather than choosing to buy clothes via Instagram. The knowledge from this research will be useful to entrepreneurs or those interested in trading clothes online via Facebook and Instagram, because nowadays, people are increasingly buying clothes online. Because it is comfortable and there are many styles of clothes to choose from This research may be part of the decision making process for new entrepreneurs who are interested in selling clothes online.