In each of the different materials that are used as food sources for
Pleurotus ostreatus mushroom found the best raw materials are fermented sawdust and straw as it helps in the growth of the fungus in the fibers and found that the yield of mushrooms. is directly related to the spread of fiber and fiber density. The amount of mushrooms after harvest sawdust fermentation volume up to 61.04% when compared to other raw materials, and that some elements where raw materials such as cellulose, lignin and fibre help in the growth of the fiber. and the growth of fungus, including the amount of output.