Based on SY235 type single multiway valve valve excavator and dual multiway valve prototype, hydraulic module model of the excavator main pump, single valve, dual vale and actuator were built with AMESIM, excavator kinematics model was established by ADAMS, which was verified through dynamic simulation. Basing on SY235C8M type and SY235C8S，the two excavator experiment systems were built. Basing on these excavators, by doing same tests on two excavator experiment systems, the result shows that comparing with the single valve, cylinder pressure of dual valve control system is small, power consumption is smaller, more efficient; the cylinder pressure of dual valve control system get peak first, exist mutation fluctuations at the beginning of the action, and achieve steady state quickly than single valve control system; displacement response of dual valve control system was also faster.