Based on information adoption theory,a model of usefulness of government accounting information is built. Data is obtained using random grouping experiments of three factors. Then effect of three factors,content of government financial information,knowledge-based recommendation service,presentation formats,on the usefulness of government accounting information and attitude towards to adoption of accounting information is tested. The results showed that both content of government financial information and knowledge-based recommendation service,as the central path of model,has remarkable and pos...