An experiment with a platform was adopted to analyze the hydraulic excavator fault, and a measuring method of parameters was introduced based on Tee. By analyzing the parameters, the problem of hydraulic fault which appeared in the work process was quickly and effectively solved, which brought great convenience for production. At the same time, the SOLIDWORKS2012 software was used to design visualization platform. It simulates the process of excavator movement, and has certain value of application and popularization.