It was usual that museums built up their won Web sites nowadays. However, building Web sites didn¡¦t mean that museums used Internet to support museums¡¦ operation. In researcher¡¦s opinion, using Internet services had become an indivisible part of modern life. Since researches on private museums was less than those on famous and public museums, this study used the ICDT model ¡]four virtual space, included information, communication, distribution, and transaction¡^and the Content Analysis to point out the dimension and the level of digitalization of 97 museum Web sites. This study result could be used to suggest museum operating Web sites and providing e-services in an excellent way. The study result included the following guidelines: 1¡EThe information-and-commerce-based Web sites presented more consistency than those of information-based Web sites. The information-and-commerce-based Web sites also presented higher level of digitalization. 2¡EThe museum Web sites should provide information of abundance and depth, use multiple online communication functions, develop Internet as a new distribution, and pay more attention to the security of transaction and individual¡¦s privacy. 3¡EThe problem of digitalization of private museums was the unclear idea of digitalization and Web site, as well as the unrealized needs of museums and Internet users. In suggestion, the museum should find out attributes that differed from the others, and set up the Web site¡¦s main notion according to museum mission. Further more, to match museum¡¦s needs and user¡¦s needs, so as to seek for corporation of other business and resources. Finally, to keep well maintenance and evaluation of Web sites.