A chemical analysis apparatus, comprising: a stirring mechanism that stirs a sample and a reagent using an acoustic wave in a reaction vessel , generates the acoustic wave by a piezoelectric element, and includes an acoustic wave sensor that detects the acoustic wave; and a controller that controls the stirring mechanism , wherein the controller includes: an acoustic wave detection unit that processes a detection signal detected by the acoustic wave sensor ; a normal information memory that stores normal time information; a signal strength determination unit that compares an amplitude of an acoustic wave and a frequency of an acoustic wave transmitted from the acoustic wave detection unit with an amplitude of an acoustic wave and a frequency of an acoustic wave stored in the normal information memory ; a repetition cycle determination unit that compares a cycle characteristic of an acoustic wave transmitted from the acoustic wave detection unit with a cycle characteristic of an acoustic wave stored in the normal information memory ; and a deterioration determination unit that determines deterioration of the piezoelectric element and normality of the reaction vessel based on a comparison result in the signal strength determination unit and a comparison result in the repetition cycle determination unit . a stirring mechanism that stirs a sample and a reagent using an acoustic wave in a reaction vessel , generates the acoustic wave by a piezoelectric element, and includes an acoustic wave sensor that detects the acoustic wave; and a controller that controls the stirring mechanism , wherein the controller includes: an acoustic wave detection unit that processes a detection signal detected by the acoustic wave sensor ; a normal information memory that stores normal time information; a signal strength determination unit that compares an amplitude of an acoustic wave and a frequency of an acoustic wave transmitted from the acoustic wave detection unit with an amplitude of an acoustic wave and a frequency of an acoustic wave stored in the normal information memory ; a repetition cycle determination unit that compares a cycle characteristic of an acoustic wave transmitted from the acoustic wave detection unit with a cycle characteristic of an acoustic wave stored in the normal information memory ; and a deterioration determination unit that determines deterioration of the piezoelectric element and normality of the reaction vessel based on a comparison result in the signal strength determination unit and a comparison result in the repetition cycle determination unit . an acoustic wave detection unit that processes a detection signal detected by the acoustic wave sensor ; a normal information memory that stores normal time information; a signal strength determination unit that compares an amplitude of an acoustic wave and a frequency of an acoustic wave transmitted from the acoustic wave detection unit with an amplitude of an acoustic wave and a frequency of an acoustic wave stored in the normal information memory ; a repetition cycle determination unit that compares a cycle characteristic of an acoustic wave transmitted from the acoustic wave detection unit with a cycle characteristic of an acoustic wave stored in the normal information memory ; and a deterioration determination unit that determines deterioration of the piezoelectric element and normality of the reaction vessel based on a comparison result in the signal strength determination unit and a comparison result in the repetition cycle determination unit . <EOS>