Through pouring experiments, the characteristics of flowing and filling of molten metal in EPS-V process are studied; the change and influence of vacaum value in the mould are measuted with the aid of sensors; a comparison of different gating systems is also made. The results obtained are of great aid to further studies of interactions among the metal, the mould and the evaporative plastic pattern and to the studies of forming theory of castisgs, as well as to the establishment of a reliable basis for the design of EPS-V foundry process.