[Purpose/significance] At present, there are pain-point problems such as difficult to share data, poor data quality, data misuse and inefficient data use in Chinese government data use practice, thus it is urgent to enhance gov? ernment data utilization ability. [Method/process] Based on critical review of existing literature at home and abroad and gaps identified in theory and practice，this paper proposes a framework of government data utilization ability and its guarantee factors, which is composed of five dimensions: data availability ability, data usefulness ability, ability for data effective use, ability for data secure use, and ability for data enabling intelligent applications and services. Mapping with the proposed framework, this paper carries out a case study of Beijing Big Data center, and obtains the key guaran? tee factors of Beijing government data utilization ability. [Result/conclusion] The research finds that institution, sub? ject and technology are the key guarantee factors for enhancing local government data utilization ability. Based on the five-dimensional guarantee factors of the government data utilization ability framework, this paper puts forward sugges? tions on how to enhance the data utilization ability of local governments.