The environmental benefits of mycorrhizal symbiosis, particularly in the context of soil conservation, biodiversity conservation, and climate change mitigation, are increasingly gaining attention, especially in the ecological research area. Mycorrhizal fungi, especially arbuscular mycorrhizal fungi, usually form a symbiotic relationship with approximately 80% of terrestrial plant families. This symbiotic relationship enhanced nutrient uptake, particularly phosphorus, and improved plant resilience to abiotic stresses such as salinity, flooding, and drought due to climate change. This symbiosis not only supports plant health but also promotes soil organic matter formation and their aggregate stability, which are critical for soil conservation and carbon sequestration in agroecosystems. Additionally, mycorrhizal networks also facilitate nutrient cycling and carbon sequestration, with studies indicating that mycorrhizal colonization can lead to an average increase of about 25% in soil organic carbon content compared to a non-mycorrhizal soil system. Recent research has shown that mycorrhizal networks can transfer up to 40% of nitrogen and 50% of the phosphorus required by plants, significantly reducing the need for chemical fertilizer. Moreover, AMF-inoculated plants have demonstrated up to 80% higher drought tolerance compared to non-inoculated plants. Furthermore, mycorrhizal fungi play an important role in enhancing biodiversity through supporting the diverse range of plant species that lead to various ecosystems and new habitats. The presence of mycorrhizal fungi can influence plant community dynamics and niche differentiation, promoting a more resilient environment capable of any climate changes. This book chapter explores the multifaceted roles of mycorrhizal symbiosis extending beyond the individual plant and encompassing its environmental benefits on soil conservation, biodiversity conservation, and climate change.