The goal of this article is to better direct the design and construction production for Resonant Pavement Breaker(RPB) cement concrete. The analysis is supported by Chongshuang old pavement renewal project in Chongzhou of Chengdu in Sichuan province. Building and calculating ANSYS module, it analyzes asphalt overlay bottom layer deflection influencing factors and obtains asphalt overlay recommend thickness. The research findings will provide reference for design and construction of rubbled slab in the future.