PROBLEM TO BE SOLVED: To provide an automatic peritoneal dialyzer, when an alarm is issued not to continue a peritoneal dialysis treatment, allowing a peritoneal dialysis patient to accommodate to the alarm in the automatic peritoneal dialyzer.SOLUTION: An automatic peritoneal dialyzer 1 includes: a housing 1A; an installation section 500 in which, when an alarm relating to the peritoneal dialysis treatment is issued while performing the peritoneal dialysis treatment for a patient by feeding a peritoneal dialysis fluid, a storage medium MD is installed, the storage medium storing operation guide information representing a procedure for accommodating to the alarm; a display section 10 provided in the housing 1A; and a control section 200 that is provided in the housing 1, reads minimum required operation guide information from the record medium and causing the display section 10 to display it.
