电子散斑干涉计量在变形量检测￣１、无损探伤、振动分析￣（２，３）等领域具有广泛的应用前景，目前它之所以未能实用化，最重要的原因就是该系统对环境的要求过高，特别是物体的振动和空气的扰动对测量结果影响很大，甚至会导致测量失败，因而国内外学者在不断寻找解决此问题的锁相技术。本文提出了一种简易的切实可行的锁相方法—光学锁相法，消除了物体的振动和空气扰动对电子散斑测量的影响。 Electronic speckle interferometry measurement in the deformation detection ~ 1, nondestructive testing, vibration analysis (2,3) and other fields have a wide range of applications, the reason why it has not been practical, the most important reason is that the system of environmental Excessive requirements, especially the vibration of the object and the disturbance of the air have a great influence on the measurement results, and even lead to the failure of the measurement. Therefore, domestic and foreign scholars are constantly looking for a phase-locked technology to solve this problem. This paper presents a simple and practical phase locking method - optical phase-locked method, eliminating the impact of object vibration and air disturbance on the electronic speckle measurement.