Using broken waste glass to replace natural aggregate in asphalt mixture has great economic potential and environmental protection advantages. However, compared with natural aggregate, low strength glass aggregate is easy to break under load. Therefore, it is necessary to explore the crushing behavior of glass aggregate under load and its influence on the performance of asphalt mixture. In this paper, the crushing behavior of the mixture is analyzed by rotary compaction test and digital image processing technology, and the pavement performance of the mixture is studied by taking the aggregate crushing index of the mixture as the index. The results show that with the increase of compaction times and glass aggregate content, the aggregate crushing index of the mixture increases, and the aggregate crushing phenomenon of the glass asphalt mixture becomes more and more obvious, and the glass aggregate is mainly broken. Through the extraction of the void information of the cross section of the glass asphalt mixture specimen, it is found that the void number and void area of the mixture decrease with the increase of compaction times and glass aggregate content. Within a certain range, the crushing behavior of glass aggregate has a great influence on the road performance and durability of asphalt mixture, and has no obvious influence on the skid resistance. With the increase of aggregate crushing index of glass asphalt mixture, the high temperature performance of the mixture is weakened. When the crushing index is greater than 4.45 %, its high temperature deformation resistance does not meet the requirements of the specification. When the crushing index is less than 3.25 %, the low temperature crack resistance, water stability and durability of the mixture are improved, and when the crushing index is greater than 3.25 %, it will have an adverse effect on the low temperature crack resistance, water stability and durability of the mixture. Therefore, it is suggested that the glass content in the glass asphalt mixture should not exceed 20 %, and the number of rotary compaction should not exceed 150 times.