This paper summarized the key aspects of the scaling analysis method adopted in the design of the integral test facility for the containment of HPR1000 -an advanced pressurized water reactor featuring both active and passive safety systems in reactor coolant (RCS) and containment. Based on the existing scaling analysis methods for complicated thermal-hydraulic systems, i.e. Hierarchical Two-Tiered Scaling (H2TS) method and Three-Level Scaling method, the present study developed a specific scaling analysis method which did not only provide theoretical derivation of scaling parameters and ratios, but also implemented the scaling criteria in the engineering design of the HPR1000 containment integral test facility (PANGU), with an evaluation of distortions in the final design. This approach allowed the theoretical scaling parameters can be reasonably adjusted to meet the boundary limits/conditions of the facility design. The scaling analysis and evaluation of so-designed test facility ensured the experimental results are applicable to verify the safety functions of the HPR1000 containment coping with representative accident scenarios.