Abstract: It is necessary to verify the new developed passive containment system, and the small-scale test verification is an effective methodology. Methodology used to design the integral facility of passive containment system, test vessel, auxiliary system, test condition are presented briefly. Non-dimensional numbers of pressure condition, gas exist, and shell condensation heat transfer are analyzed, which indicates the non-dimensional numbers are in the acceptable range. This proves that the adopted methods in the integral test of passive containment system are reasonable and effective, and the test results show that the facility can exactly model the phenomenon of the prototype.