This article compares vibrating sieves and rotary sieves, focusing on their operation principles, advantages, limitations, and applications in powder processing. Vibrating sieves are ideal for dry, free-flowing powders, offering easy maintenance and space-saving design. Rotary sieves excel in handling sticky or agglomerated powders through centrifugal force, minimizing product loss with quieter operation. Choosing the right sieve depends on material nature, capacity needs, space constraints, and maintenance considerations.