This research was made for trying to understand how English Christian websites using the features of web-based communication effectiveness, and gave some advice for building Christian websites in the future.The contraction process of web-based communication effectiveness indexes used literature review and content analysis. Those indexes were revised by reexamining the modern situation of websites. Five aspects of indexes were ¡§usability design¡¨, ¡§useful information¡¨, ¡§two-way communication¡¨, ¡§recreation¡¨, and ¡§information collection¡¨. 31 indexes were developed by 5 aspects. The samples separated into two groups: Online-religion websites and Religion-online websites. It examined if any different performance of accepting web-based communication effectiveness between these two types of websites. The result was not distinctly different. According to this consequence, this research suggests that revise the definition of two types of religious website is necessary. The advice for how to use web-based communication effectiveness were: (1) take use of web-PR effectiveness, ¡§Push & Pull¡¨, (2) establish online religious community, (3) emerge Online-religion websites and e-platform, (4) consideration of charging fee or service for free, (5) design the website for its user. The website decision makers could use those suggestions to rethink how to make the best use of web-based communication effectiveness.