In recent years, the internet shopping development is quite developed, what every shopping website developed is quite ripe too, and 3C products occupy sizable rates in the internet shopping. So I want to study that 3C shopping website influences factor that influencing consumers¡¦ will to use the internet shopping. This research base on demography and knowledge about 3C products to create the cause-effect model of electronic service convenient, electronic service quality, customer satisfaction, and purchase intention. Through statistics software, probe into the relationship, electronic service convenient, electronic service quality, customer satisfaction, and purchase intention in the internet. In order to have close look to on customer needs is essential. Overall, the entire model fit is acceptable. It is pointed that the whole theory model of this study completes the standard of the fit test. To sum up, the results shows the indeed influential relationship among the four concepts.The customer satisfaction is the most important factor that negative effect purchase intention in the entire model. The second factor is electronic service quality. And electronic service convenient only leads a positive effect on purchase intention via electronic service quality and customer satisfaction. However, the effect is very small.