In order to obtain optimized flight vehicle concepts which meet system of systems(So S)operation requirements,designers have to pay high attention to the impact of So S at conceptual design stage since operation environment goes increasingly complex.Based on this tendency,perspectives and progresses of So S oriented flight vehicle conceptual design,which is abbreviate as So Sed design,are reviewed in this paper.Such basic concepts of So S as definition,characteristics,differences between systems engineering and So S engineering,as well as So Sed design process are introduced,then So S engineering process model for research and development of flight vehicles and So Sed design wheel model for conceptual design are proposed.Related literature is classified and analyzed in accordance with four major elements including requirements,design concept,design analysis,and trade studies and optimization:typical So S architectures,description and quantization of indexes are introduced;Application of inverse design in designing concept is analyzed;Modeling and simulation(M&S)-based methods and their applications in So Sed effectiveness evaluation are highlighted;According to So Sed trade studies and optimization related research,the importance of such points as decision-making and using multidisciplinary design optimization for reference are emphasized.Finally,the value of So Sed design is concluded,and five directions which are worthy of attention in this field are presented. In order to obtain optimized flight vehicle concepts which meet system of systems (So S) operation requirements, designers have to pay attention to the impact of So S at conceptual design stage since operation environment goes increasingly complex.Based on this tendency, perspectives and progresses of So S oriented flight vehicle conceptual design, which is abbreviated as So Sed design, are reviewed in this paper. Us basic concepts of So S as definition, characteristics, differences between systems engineering and So engineering, as well as So Sed design process are introduced, then So S engineering process model for research and development of flight vehicles and So Sed design wheel model for conceptual design are.Related literature is classified and analyzed in accordance with four major elements including requirements, design concept, design analysis, and trade studies and optimization: typical So S architectures, description and quantization of indexes are introduced; Application o f inverse design in designing concept is analyzed; Modeling and simulation (M & S) -based methods and their applications in So Sed performance evaluation highlighted; According to So Sed trade studies and optimization related research, the importance of such points as decision-making and using multidisciplinary design optimization for reference are emphasized. Finally, the value of So Sed design is concluded, and five directions which are worthy of attention in this field are presented.