E-government information resource is a special kind of public goods that can be divided into the pure-public information and quasi-public information. Therefore e-government information resource is shared in the classification pattern. In this kind of classified sharing, the provision of pure-public information is collective behavior. For complexity of collective expense, it can only be produced and provided by the government. Even if private sectors to join, the government also must dominant and control the sharing activities appropriately. The government-dominant model of e-government information resource sharing can be put into practice through the contribution benefit information sharing model, the unconventional operating information sharing model and the rational decision-making information sharing model, according to influence of interests, power, resources and other factors on government-dominant in e-government information resource sharing。