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.