通过对五声性调式结构的分析，将和弦内部音程结构设定为“基本音程模式”与“扩大音程模式”两类。由此确立五个“原始和弦”作为五声性和弦结构的基本形态。在此基础上，运用模糊集合定位、定量方式，将其归纳为“密集纵合型”、“四五度结构型”、“复合功能型”以及“混合型”四种和弦结构形式，并分别给予力度值（协和性）量化分析。 Through the analysis of the pentatonic structure, the internal chord structure of the chord is set to “basic range mode” and “extended range mode”. This establishes the five “original chords” as the basic form of the pentatonic chord structure. On the basis of this, using the fuzzy set location and quantitative methods, the paper summarizes the four chord structure forms of “dense longitudinal type”, “fourth-five degree structure type”, “complex functional type” and “hybrid type” Give value (concordance) quantitative analysis.