The invention belongs to the technical field of closestools, and in particular relates to a closestool seat
cushion with the selectable opening
diameter, a control method for the closestool seat
cushion and the closestool. The closestool seat
cushion with the selectable opening
diameter comprises a plurality of seat cushion bodies, a rotation shaft and an
electric control mechanism, wherein each seat cushion body comprises a seat cushion main body and an opening formed in the seat cushion main body, the plurality of seat cushion bodies are arranged in a nesting manner from inside to outside, the opening diameters of the seat cushion main bodies at the outer
layers are smaller than the opening diameters of the seat cushion main bodies at the inner
layers, the areas of the seat cushion mainbodies at the outer layer are greater than those of the seat cushion main bodies at the inner
layers, one sides of the plurality of seat cushion bodies are connected through the rotation shaft, and the
electric control mechanism is connected with the rotation shaft for controlling the plurality of seat cushion bodies to rotate independently or together around the rotation shaft. The different demands of different people for the sizes of the closestool openings are satisfied, the
defecation experience of children is facilitated, through the button operation, the use is convenient, rapid and sanitary, after use, the default size can be realized through automatic adjustment, then the frequent adjustment is effectively avoided, and thus the service life of the product is prolonged.