Many golf firms of carbon fiber golf shafts are much concerned about for standard measurement of shafts for their specific needs. To achieve the purpose, the present study was conducted. Flex¡GThe researcher first hanged a mass on the tip with the butt fixed, and then he hanged a mass on the butt with the tip fixed for measuring the deflection of the shaft. Torque¡GThe degree of torsion is measured by applying the twisting moment 0.126 (kgf•m) to the tip. Vibration¡GThe cycle per minute is measured by adding a mass to the tip of a shaft and shaking it. The mechanical performance of carbon fiber composite is modeled and solved by the finite element software ¡§ANSYS¡¨ in static and modal analysis. The errors between the simulations and experiments were compared and discussed. Finally, the angles of in, middle, and out layers of the shaft were changed to see how they affect the mechanical performance of golf shafts. In this study, the errors of the results for deflection, degree of torsion, and cycle per minute of golf shafts between experiments and simulations are less than 10%. The results solved by the finite element software ¡§ANSYS¡¨ are reliable. The results of simulations also show that a close relationship between the mechanical performance of golf shafts and the fiber angles. Eventually, a series of data bases and trend pictures were provided for golf firms' reference and application.