Abstract: High drag force and strong aerodynamic heating are two main problems in the aerodynamic layout design of hypersonic vehicles. As one kind of active flow control technologies, counterflowing jet has become a research hotspot because of its capability on drag and heat load reduction. This paper focuses on the application of counterflowing jet technology in different shapes on the vehicles, and the developments of key parameters for the technology are reviewed, including pressure ratio, mass flow rate, and the coolant. This technology can be effectively applied to the thermal protection of high speed reentry capsule and the drag reduction of blunt body and lifting body. The typical physical phenomena displayed by counterflowing jet, such as flow mode transformation and the mechanism of self-sustained oscillation, are analyzed in detail by means of experimental and numerical methods. At the same time, we introduce the application results of counterflowing jet technology in hypersonic lifting-body vehicles obtained by our research team, including the increment in lift to drag ratio of the lifting-body vehicle and periodic oscillation characteristics of the counterflowing jet at a certain angle of attack. These results can be used to provide a reference for further engineering application of counterflowing jet.