Flat slabs are essential in modern buildings for saving space and simplifying construction. However, they are vulnerable to punching shear at the locations where columns support them. This study highlights the use of Ultra-high Performance Fibre Reinforced Concrete (UHPFRC) to enhance its resistance against this type of failure due to its better mechanical properties than regular concrete. Through detailed analysis using a non-linear finite element (FE) method in ABAQUS, informed by Al-Quraishi Hussein's research, this investigation evaluates the punching shear resilience of UHPFRC flat slabs. The results indicate that the FE model accurately reflects the material behaviour under test conditions. Through the assessment of the SI and TI indices, it is shown that fibre reinforcement significantly improves the punching resistance of flat slabs.