提出了一种新的小型ＴＥＡＣＯ２激光锁定技术复合腔注入锁定技术，并介绍了它的原理。从理论上分析了复合腔注入锁定激光器的频率特性。给出了复合腔注入锁定实验研究的初步结果 A new small TEACO2 laser locking technique was proposed to inject and lock the compound cavity, and its principle was introduced. The frequency characteristics of compound cavity injection locking laser are theoretically analyzed. The preliminary results of experimental study of compound cavity injection locking are given