This review is provided with a detailed overview of common reinforcement and inspection techniques for producing reinforced composite materials. This study focuses on the state of the art for how used carbon nanotubes (CNTs) as a reinforced material to obtain micro-composite and nano-composite materials. On the other hand, up to now, the major problem is to get a uniform dispersion of the CNTs in the wanted reinforced composite material. So, this review paper emphasizes on several techniques which are utilized for improving the dispersion of CNTs in a metallic powder, such as copper (Cu), aluminum (Al), and magnesium (Mg) as matrix composites. Furthermore, this review presents two different experimental techniques (destructive testing and non-destructive testing) with the purpose of detection of CNTs dispersion in the reinforced composite material. As a result, this review is a helpful tool for all scientists for deciding which technique is more suitable for their research composite materials.