In this study, the current researchers observed the multiple reasons of online advertising which cause various inconveniences when people use Internet. 1,101 online users were surveyed by structured questionnaires asking why they feel uneasy when they are exposed to online advertising. Among many reasons, the most people agreed that they hate the online advertising which do not contain the closure button. In addition, online advertising which covers the original contents and was indicated as inconvenient contents bothering online use. These online advertising contents bother people’s online use by discursive impact on user’s eyes and minds. Based on the sociodemographic characteristics such as age and gender, this study analyzed user’s perception regarding various online advertising format which cause many problematic inconvenience when people use online contents. Further findings and details were closely discussed on this study to suggest the effective ways for reasonable online advertising contents use.