PURPOSE: To prevent the deterioration in the analysis processing faculty by automatically carrying out reinspection when the concenration of the inspected component of a sample exceeds a limit for the correct measurement.

CONSTITUTION: As for a reaction liquid for the initial inspection, it is judged if the result of the measurement exceeds a measurement limit judgement value or not during the reaction process up to the final measuring time, and if the judgement value is exceeded, the reaction liquid is sucked by the previously determined capacity portion by a sample pipette in the next sample taking-out process, and the reaction liquid is discharged into a reaction container which is newly prepared, and a reagent for analyzing the same inspected component to that for the initial inspection is added into the reaction container, and reinspection is carried out.