The purpose of this study is to identify the influence of O2O service characteristics, ease of use, usefulness, satisfaction and behavioral intention of O2O service to experienced customers using Starbucks siren order. Four characteristics of convenience, leisure, economy, and information were used as characteristics of O2O service. We analyzed the effect of each factor of O2O service characteristics on perceived usefulness and perceived ease of use from the viewpoint of consumers accepting new technology by applying TAM model. The results showed that convenience had a positive effect on both ease and usefulness, and economics had a positive effect on usability. Also, ease of use has a positive effect on usability, ease and usability have a positive effect on satisfaction, and satisfaction has a positive effect on behavioral intention. In the future, O2O service as a sales channel for food and beverage products and services will not be possible except for mobile, so it will be more reliant on it and it is becoming more and more important to develop an application that anyone can use.