Mixed sand and stone can be separated using a rotary sand sieving machine . Sand and stone cannot be refined any further if they are combined. As a result, the machine will facilitate the work that the operator previously performed manually by sieving. To speed up the sieving process, you can use a machine powered by human labour. This study aims to develop the most efficient and cost-effective concept design possible. Beginning with a functional decomposition, a morphological matrix is used to generate ideas. Then, a feasibility evaluation, a yes/no screening, and a basic decision matrix are used to evaluate the concepts. One or more of the most promising ideas are ultimately picked to undergo further development into actual goods based on evaluation and other selection criteria. This design successfully achieved the most optimal sand-sieving machine concept in terms of efficiency, energy, and adaptability. Let's understand the use of rotary sand sieving machine. In its unprocesse