彝语变调包括构词变调和构句变调两个方面。本文对在构词中发生变调的三个实际本调及其所变成的现实变异调，以及变调情况、变调性质等与构词变调相关问题进行了考察，并对构词变调的诸因素作了可能的解释。认为彝语构词的变调与否受相接音节的声调调值音差、声调特征以及所属语素等因素的制约。 The variation of Yi language includes two aspects: word-changing and sentence-changing. This article examines the three actual changes in the formation of the tone and the changes it has become the reality of variation, as well as the tone change, Possible explanation. It is considered that whether or not the word structure of Yi is changed or not is restricted by the pitch difference, the tone feature and the morpheme to which the syllable is linked.