Personal information protection on mobile Apps has been widely concerned. In order to understand the current situation and problems of personal information protection of government affairs Apps，12 categories of evaluation items were designed from different dimensions，and 31 provincial government affairs Apps were evaluated. According to the evaluation，the overall performance of personal information protection of government Apps was not satisfactory，and more than 35% of the Apps were below the average level. In addition，economically strong provinces fail to show obvious advantages as expected. Governments at all levels should attach importance to the personal information protection and compliance of their government affairs Apps，take the lead in strengthening personal information protection，and promote standardized development of digital government.