Abstract:The civil aero-engine inlet anti-icing system provide the guarantee to the engine operation safe in the icing condition. The Civil Aviation Administration of China published the regulation to the civil aeroengine operation in the icing condition. However, there is less relevant research work about anti-icing system design. In this paper, the research progress for inlet piccolo anti-icing system in recent years is introduces. The design requirement, design methods, optimization methods and test verification methods are described which provide a reference to the design of the civil aero-engine inlet piccolo anti-icing system.