Based on the steel bridge deck pavement test results of The Fourth Nanjing Yangtze River Bridge, the paper analyzes performance of composite guss asphalt concrete. Through systematic analysis of the relationship between dynamic stability and temperature, wheel load, speed and driveway, combined with the study of the phenomenon of overloading in Nanjing area, rutting evaluation model of steel deck pavement of composite guss asphalt concrete were put forward and validated by field test.