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Application of digital image correlation (DIC) method to determination of in-situ dynamic strain is presented in this study.Firstly,an integrative software is programmed based on the DIC algorithms and pointwise least-squares fitting technique.Then,simulated speckle images are generated to study the computational accuracy of this software.The experimental setup and procedures for measuring in-situ dynamic strain through both DIC and strain gauge are proposed.The DIC results are close to those measured by strain gauge.This fact reveals that DIC is a practical and effective tool for in-situ dynamic strain measurement.Finally,the full-field in-situ dynamic strain of another specimen is measured by DIC,and the overall distribution of the strain in the measurement area is clearly shown.