To provide an optimized hemodialysis system such as capable of suppressing variations in a blood pressure according to the individual difference of a patient.The system is configured to include: blood related information acquiring means configured to acquire blood flow information and patient biological information in a blood circuit for hemodialysis, the patient biological information being peripheral vascular resistance information, blood pressure information, face information, body movement information, temperature information, and humidity information and the like; individual difference information managing means configured to acquire and manage patient individual difference information from the blood related information; and optimized dialysis means configured to perform optimized dialysis treatment for the patients on the basis of the patient individual difference information.