Carbon fiber reinforced plastic (CFRP) material is a lightweight, high-strength material that takes advantage of the characteristics of carbon fiber and resin. CFRP is widely used in parts that require high strength, such as aircraft and hydrogen tanks. Although it has high strength, receiving a large impact may cause internal peeling or internal defects. Detection of these delamination and defects is important for the strength and quality assurance of CFRP materials. In this research, an inspection method of the CFRP materials using electromagnetic force vibration is proposed. In this method, electromagnetic force vibration is impressed from the surface of the CFRP material with the internal defects, and the defects are estimated from the vibration intensity. When the proposed inspection method is applied to a CFRP plate with the internal defect, since the vibration intensity at the defect location is increased, the defect can be detected.