Fungi are a kingdom of eukaryotic organisms. The fungi are heterotrophic organisms characterized by a chin nous cell wall, and in majority of species, filamentous growth as multi cellular hyphenate forming a mycelium; while some fungal species grow as single cell. Sexual and asexual reproduction is via pores, often produced on specialized structures or in fruiting bodies. For example, yeasts, moulds, and mushrooms are fungi. Fungi are found all over the world, and grow in a wide range of habitats, Including desert, Most fungi grow in terrestrial environments, but several species occur only in aquatic habitats. Fungi along with bacteria are the primary decomposers of organic matter in almost all terrestrial ecosystems, worldwide. This eminent work covers all perfect and realistic features of fungi in an interesting manner. This work is bound to create new waves in the discipline.