Abstract: An automatic analyzer in which abnormalities of reagents and samples used are displayed. Abnormalities are displayed in the form of a list which is composed of an alarm colored display table and an alarm detailed table. With respect to the alarm colored display, alarms which have occurred in reagents, standard solutions and control analytes in each analytic item are displayed in the form of a list so as to be classified by colors. With respect to the alarm detailed table, analytic information concerning abnormality of reagent, abnormality of standard solution, abnormality of control analyte, number of analyses, term of validity, alarm, etc. and information concerning the kind of reagent, the kind of standard solution, the kind of control analyte, the setting position, etc. which will be newly required for analysis in the future now are displayed.