Study of various petroleum fractions Kazakhstana are given in a number of papers1-8. However, to determine chemism and mechanism of the process of reforming the study of physico-chemical properties and individual hydrocarbon composition of the starting gasoline and reformate obtained from the various stages of the reactor block catalytic reforming process are of particular interest. Study of physico-chemical properties and individual hydrocarbon composition of the starting gasoline and reforming catalysate obtained from different stages of the reactor are of particular interest to determine the chemistry and mechanism of the reforming process. The paper presents a study data of raw materials and catalysate. They obtained catalytic reforming of an industrial plant in the processing of virgin gasoline (fr.62-18oC) paraffin Kazakh oil.