To provide a papermaking screen apparatus which is made compact.

A papermaking screen apparatus S for directing a papermaking raw material from the inside of a screen toward the outside to refine the material, includes a tank 10, and first to N-th screens 11-1N partitioning the tank 10. A first common chamber 10A is provided inside the screens 11-1N, and the one tank 10 includes first to N-th refining chambers.