Abstract- Insects are among the most diverse and ecologically significant organisms on Earth, playing a fundamental role in maintaining ecosystem stability and supporting pollination processes. This research paper examines the contribution of insects to ecosystem functioning, including pollination, nutrient cycling, decomposition, soil health, and trophic interactions. Pollinators such as bees, butterflies, hoverflies, and other insects are essential for the reproduction of flowering plants and agricultural crops, thereby supporting food security and biodiversity. Insects also contribute to ecosystem resilience by sustaining food webs and maintaining ecological balance under environmental stress. The study further highlights the importance of insect diversity in enhancing ecosystem resistance, recovery, and functional stability during climatic disturbances and anthropogenic pressures. However, habitat loss, fragmentation, pesticide use, climate change, pol

keywords Insect Diversity, Ecosystem Stability, Pollination, Biodiversity Conservation, Soil.