Abstract: The carbon fiber laminated boards impacted at low velocity were tested and analyzed using infrared thermal wave testing.  The relationship between the damage area and impact energy was discussed. The  experimental results was consistent with the literature. It is found that infrared thermal wave testing can not only detect the size of impact damage but the expansion of internal damage which revolves round the impact point along the fiber direction. The same laminated boards were tested by ultrasound C-scan.   For carbon fiber laminated boards after low velocity impact, infrared thermal wave testing is a rapid, effective and reliable non-destructive evaluation method compared with the ultrasound C-scan.