Two concepts are proposed to minimize coating cracks on the surface of C/C composites. The first idea of a multi-layered coating is based on the phenomenon that there exists a critical coating thickness below which no coating cracks appear. This phenomenon is experimentally and theoretically confirmed for a SiC coating. Thus, by alternately laminating thin SIC and carbon layers, coating-cracking is expected to be suppressed for a thick and dense coating. The second concept is the use of a fiber-reinforced coating. By the fiber reinforcement, the toughness of a ceramic coating should be improved. In this paper, both concepts are shown to be promising to reduce through-the-thickness coating cracks. In addition, problems especially related to oxidation behavior are discussed in relation with the two-coating systems.