A container for the suspension and filtration of stool enables quick, simple, and safe collection of cancer cells separated in stool. The container comprises (a) a stool collection container 1, (c) a stool processing container main body 20, and (d) a pushing member 30. The stool collection container 1 comprises a syringe 2 capable of collecting 0.5 g or more of stool by being thrust into stool, a stool collecting opening, a handle 3 provided on the periphery of the syringe at the opposite end to the stool collecting opening, and a cap member 4 provided at the opposite end to the stool collecting opening. The stool processing container main body 20 comprises: a syringe storage portion 21 for storing the syringe; a suspension portion 22 connected to the syringe storage portion for suspending the stool; a filtrate receiving container 23 detachably connected to the suspension portion for receiving a filtrate of the stool that has been suspended and filtered; and a filter 26 provided at a connection portion between the suspension portion and the filtrate receiving container. The pushing member 30 is pressed to press or tear the cap member so as to move the stool collected in the syringe of the stool collection container into the suspension portion.