The method of dating a series of 14C samples must suffice high accuracy of dating raised by Project of Xia-Shang-Zhou Chronology. The calibration for series samples using Bayesian statistics is a key work in the method. In order to estimate the applicability and accuracy of the program OxCal. The results calculated by our program and those from OxCal have been put in comparison. The calculation shows that the program OxCal suits the project.