The cultivation of medicinal mushrooms holds significant promise for biotechnological applications, driven by their rich reservoir of bioactive compounds with therapeutic potential. This study investigates the submerged cultivation of Cordyceps sinensis, Grifola frondosa, and solid-state cultivation of Ganoderma lucidum and Hericium erinaceus, focusing on optimizing growth parameters for enhanced biomass and metabolite production. For C. sinensis, carbon and nitrogen sources significantly influenced mycelial growth, with peptone and beef extract demonstrating superior performance. Temperature and pH were identified as crucial factors for optimal growth and metabolite synthesis. In G. frondosa, pH ranging from 4.0 to 7.0 and temperature at 25 °C favored biomass and exopolysaccharide production. Aeration and agitation rates influenced fermentation performance and morphological characteristics. G. lucidum cultivation on sawdust substrate exhibited notable biomass production, with temperature and pH optimization enhancing growth and exopolysaccharide accumulation. Hericium erinaceus cultivation in a stirred tank reactor showed promising results, with substrate composition and aeration strategies contributing to biomass yield. These findings underscore the importance of precise control over cultivation parameters in maximizing the biotechnological potential of medicinal mushrooms.