This research is a quantitative research. That have the objective to study 1)demographic characteristic affecting on purchasing decision through JD Centralapplication 2) online marketing communication affecting on purchasing decision through JD Central application. The sample is customers who purchase products through the JD Central application of 400 persons. The researcher selected purposive sampling by using questionnaires with the reliability of each variable between .906 - .949. Statistics used to analyze data were frequency percentage mean standard deviation one - way analysis of variance and multiple regression analysis with a statistical significance level of .05. The results showed that 1) most of the respondents were male 54.00 percent age between 18 - 31 71.00 percent bachelor’s degree 66.50 percent status of single people 71.75 percent sudents 36.25 percent Income/month less than 15000 baht 36.50 percent and family size 3 - 4 people 54.50 percent 2) demographic characteristics affecting on purchasing decision through JD Central application with a statistical significance of .05 were education levels 3) online marketing communication affecting on purchasing decision through JD Central application with a statistical significance of .05 were Website Twitter and Facebook.