NOVELTY - Method for converting n-paraffins into isoparaffins involves pretreating high-silica zeolite carrier, performing high-silica zeolite carrier firing treatment, calcining zeolite with 0.05-1 mol/L ammonium nitrate, subjecting ammonium chloride or ammonium carbonate solution to ion exchange treatment, adding solid ammonium salt solution with zeolite, washing with deionized water, drying, pretreating zeolite carrier, pelletizing catalyst using conventional abrasion, and forming catalyst having particle size of 20-120 microns by spray granulation.    USE - Method for converting n-paraffins into isoparaffins (claimed).    ADVANTAGE - The n-paraffins into isoparaffins are efficiently converted.    DETAILED DESCRIPTION - Method for converting n-paraffins into isoparaffins involves pretreating high-silica zeolite carrier, performing high-silica zeolite carrier firing treatment, calcining at 400-600 degrees C for 3-8 hours, calcining zeolite with 0.05-1 mol/L ammonium nitrate at 20-80 degrees C, subjecting ammonium chloride or ammonium carbonate solution to ion exchange treatment, adding solid ammonium salt solution with zeolite in the liquid volume ratio of 3:1-10:1, switching for 0.2-100 hours, controlling 1-5 times sodium ion content to less than 1%, then washing with deionized water, then drying the hydrogen form zeolite, calcining at 400-600 degrees C for 3-8 hours, drying at 80-200 degrees C for 1-100 hours, adding and performing hydrochloric acid, nitric acid, sulfuric acid solution or citric acid hydrogen zeolite reaming process, then washing with deionized water to neutral, then drying, calcining carrier, controlling acid concentration to 0.05-6 mol/L, performing reaming acid treatment time for 1-5 hours at 20-80 degrees C, drying at 50-200 degrees C for 3-20 hours, calcining at 300-600 degrees C for 1-4 hours, pretreating zeolite carrier for hydrogen purification vacuum degassing treatment at 20-90 degrees C, performing degassing time for 0.5-12 hours under negative pressure of -0.01 to -0.1 MPa, stirring and maintaining the temperature of negative pressure state, contacting the precursor solution with a gold carrier, precipitating agent to the mixture by precipitation reaction load vacuum deposition of gold for 5-100 hours, performing solid-liquid separation, washing with deionized water until no chloride ion, drying at 80-200 degrees C for 0.5-100 hours and calcining at 300-700 degrees C for 3-20 hours, calcining catalysts in a muffle furnace or plasma roasting process, roasting nitrogen atmosphere, helium, argon, air or oxygen, mixing catalysts using conventional extrusion molding strip at 150-600 degrees C under reaction pressure of 0.3-3 MPa, pelletizing catalyst using conventional abrasion at 150-600 degrees C under reaction pressure of 0.1-0.5 MPa, and forming catalyst having particle size of 20-120 microns by spray granulation at 150-600 degrees C under reaction pressure of 0.1-0.3 MPa. The ratio of high zeolite silica and alumina is more than 10. The grain size of zeolite is 5 nm to 30 mu m. The volume ratio of acid solution and zeolite is 3:1-10:1.