The invention relates to a method and system for detecting and analyzing total harmonic waveforms of vibration on various periodical vibration occasions, identifying the single-cycle total harmonic waveforms measured, recorded and displayed; according to the characteristics of component parameters of different types of basic waveforms identified (such as sine waveform, square waveform, triangular waveform and sawtooth waveform), extracting the component parameters of the identified basic waveforms from the measured and recorded waveforms; constructing standard waveforms of the basic waveforms according to the extracted component parameters; using the displayed difference after superposing the standard waveforms with the measured and recorded waveforms and combining with the state of an detected object as detected and the related professional technique of the detected object to analyze the distortion states and reasons of the measured and recorded waveforms or the state and change reasons and rules of some single construction characteristic of the detected object, so as to realize the single effect analysis of the measured and recorded total harmonic waveforms (or system error analysis). |