Introduction: Staircase is facilities functioned to connect floors. Stairs which are not ergonomic may cause fatigue and accident for the users. Universitas Airlangga Public Health Faculty Building is a three-story building. Each floor has 5 staircases on different sides. The aim of this study was to analyze the ergonomics aspects of the architectural design of the staircase. Method: This study used cross-sectional design with descriptive analysis. The measured dimensions of the staircase were riser's height, tread's depth, stairs width, stairs slope, landing, lighting level, handrail's height and diameter, and the presence of non-skid surface. The measurement tools were measuring tape, lux meter and cylinder bore gauge. Results: Measurement showed that all riser's height met the recommendation. Most tread's depth was below 30 cm. The width of Northwestern and Southwestern staircase was below the recommendation width, which was <125 cm. All slope of stairs was within the recommendation slope. The height and diameter of all handrails was 96 cm and 5.5 cm respectively and was above the recommendation. The lighting level during daytime on most staircase was above 100 lux but during nighttime was below 100 lux. There were landings that were wider than the stairs and non-skid surface at the edge of each tread. Conclusion: Most dimension of staircase (67.5%) in Universitas Airlangga Public Health Faculty Building met the design recommendation but the tread's depth, width of stairs, handrail's diameter and height, as well as the lighting on stairs need to be improved to make the stairs safer.