Abstract: The observation of clinker lithofacies structure can be used to judge the problems in the production of cement clinker. This paper introduces the impurity composition and crystallization of raw material，batching rate value，the fineness of raw material，the reflection of homogenization effect on the clinker lithofacies structure in detail，so as to guide the selection of raw material and the formulation of raw malerial index.

Key words: cement clinker, lithofacies structure, process of raw malerial preparation