As silicon carbide fibre/silicon carbide ceramicmatrix composites (SiC

f

/SiC CMCs) have become widely used in high temperature hot-section components in aerospace and aero-engines

nondestructive testing and evaluation (NDT E) is particularly important. Due to the special high temperature manufacturing process

internal microstructure and defect characteristics of SiC

f

/SiC CMCs

it is difficult to realize reliable NDT E of SiC

f

/SiC CMCs by using existing detection techniques and defect evaluation methods. Based on the studies in this field in the recent years

the defects and characteristics of SiC

f

/SiC CMCs are analyzed. The research progress

in NDTE of SiC

f

/SiC CMCs is reviewed. The main technical challenges in NDTE of SiC

f

/SiC CMCs are presented. The future development tendency in NDT E of SiC

f

/SiC CMCs is given. At present

high-resolution digital X–ray imaging and high-resolution asymmetric-frequency ultrasonic detection techniques have become very important methods for the NDT E of SiC

f

/SiC CMCs

and good practical testing and applications have been obtained.