To provide a solid-liquid separation device capable of separating a comparatively clear filtrate from a comparatively turbid filtrate even when the property of a treatment object is changed.SOLUTION: A solid-liquid separation device 100 comprises: a first rotary shaft 22a; a laminated rotary filtration body 300 disposed along the axial direction of the first rotary shaft 22a and formed with a first filtration groove S1 passing a filtrate; a rotor type dewatering portion 3 having a plurality of rotors 32 arranged in two rows and dewatering a treatment object; and a liquid receiving portion 121 which is disposed below the rotors 32 and by which a range receiving the filtrate passing the first filtration groove S1 can be changed in a direction along the moving direction of the treatment object in the rotor type dewatering portion 3.SELECTED DRAWING: Figure 1
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