Abstract:The timely feedback and repair of bug is the basic guarantee for the long-term and healthy development of open source software. Facing a large number of open source software bug reports submitted every day, including many factors, many bug reports affect the effective judgment and repair process of defects due to missing or inaccurate descriptions. For the complex bug report information that needs to be filled in, the report submitter is also impossible to determine which attributes are critical and which need to be highlighted, which results in poor quality of submitted bug report. Based on the analysis of 28 features of 5 dimensions described in bug report in the comprehensive literature, the importance ranking and comparison of bug report features are carried out from two perspectives of inter dimension and multi feature within dimension. The results show that the F1 value and accuracy index of two dimensions, text feature and bug reporter experience feature, are the highest, and the features within each dimension also show different importance, therefore, it can guide the bug reporter to standardize the submission of bug report, or guide the repairer to determine and repair defects.