Earthworms, which play an important role in soil functioning, have enormous potential for ecosystem restoration. Burrowing and feeding improve soil aeration, nutrient cycling, and organic matter decomposition. Vermicompost, a result of earthworm-mediated organic waste conversion, has a high concentration of humic acids, enzymes, plant growth hormones, and antibacterial components, making it an effective environmentally friendly fertiliser. Recognising the critical role earthworms play in healthy ecosystems, scientists have conducted substantial study on their capacity to survive and even flourish in metal-contaminated soils. Earthworms may tolerate and adapt to metal-contaminated soils by collecting metals in their tissues. Vermicompost maintain soil health and fertility through the significant quantities of plant-available nutrients such as NPK and other biochemicals. Several studies have found that earthworms can withstand and live in soils with greater metal concentrations, as well as collect metals in proportion to their substrate concentrations. This article examines the effects of metal buildup in earthworms and the effect of soil conditions on its absorption, as well as the morphological, behavioural, and avoidance symptoms caused by metal exposure.