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对电弧喷射推力器及其内部工作过程特性作了简要介绍，分析了内部工作过程对其性能的影响并对有关实验与理论研究作了概述。电弧喷射推力器内部流动具有过程复杂剧烈，空间狭小，非平衡性强烈等特点。目前在实验上，采用气动方法、静电方法、光谱方法以及激光方法等获得了内部及外部（羽流）流动过程的多种综合参数和流场参数；理论上已建立了能初步反映化学不平衡、热力学不平衡等较为复杂物理过程的数值模型，为全面认识电弧喷射推力器内部工作过程机制提供了有效的手段。
The characteristics of the arc jet thruster and its internal working process are briefly introduced. The influence of the internal working process on its performance is analyzed and the relevant experimental and theoretical studies are summarized. The internal flow of arcjet thruster has the characteristics of complex and violent process, small space and strong non-equilibrium. At present, a variety of comprehensive parameters and flow field parameters of the internal and external (plume) flow processes have been obtained experimentally using the aerodynamic method, the electrostatic method, the spectroscopic method and the laser method. In theory, the chemical imbalance , Thermodynamic imbalance and other more complex physical process numerical model for the comprehensive understanding of the internal mechanism of the arc jet thrusters provides an effective means of working mechanism.