A dialysate solution container 100 includes a flexible first bag body 10. The dialysate solution container 100 further includes a second bag body 20 which has a mixing region M for mixing a first powdered pharmaceutical agent 1 and water RO at a lower end portion of a second interior. The second bag body further has a communication pipe 21 that places the exterior of the second bag body 20 and the second interior in communication, and a first filter 22 which is in communication with a first interior of the first bag body 10. A first end 21a of the communication pipe 21 is capable of being connected to a dialysis circuit, and a second end 21b thereof is disposed within the mixing region M.
