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In order to meet the need of high thrust ratio aero engine working in long term thermal oxidation environment and the stealth requirement of key thermal structural components of aero engine, silicon carbide ceramic matrix composites are developed towards crack self-healing and structure-wave absorbing integration. In this paper, the design principles of silicon carbide ceramic matrix composites in strengthening and toughening, crack self-healing and electromagnetic wave absorption are introduced. The research progress in these three aspects is reviewed. The future development trend of structural and functional CMC-SiC is the combination of high strength and toughness, self-healing antioxidation and electromagnetic wave absorption.