This study was conducted to derive the factors behind potential human errors among Korean bodyguards and devise response strategies accordingly. For Research Project 1 (identification of human errors according to the cognitive and psychological characteristics of security guards), two interviews were conducted with 10 experts, and for Research Project 2 (identification of factors causing human errors according to behavioral and psychological characteristics of security guards), VTA technique and Multiple case analysis was conducted using the M-SHEL model. Research task 3 (deriving human factor factors of Korean bodyguards and suggesting coping strategies) was conducted using complex research methods and grounded theory approaches. As a result of the study, the human factors of security guards based on their cognitive psychological characteristics and risk normalization tendency were lack of security personnel (lack of professional spirit, lack of motivation), complacent attitude (underestimation of risk), and control failure (lack of situational awareness, VIP protocol). (First of all), etc., and the human factors of security guards based on cognitive and psychological characteristics behavior and behavioral psychological characteristics are formal and familiar work performance (lack of motivation), complacent attitude (underestimation of risk), lack of safety awareness and situational awareness (lack of motivation), etc. Familiarity with work, VIP protocol priority), etc. Through these results, it was concluded that the human factor of security guards can be reduced by strengthening the security guard's professional spirit, increasing motivation, strengthening safety awareness and situational awareness, and education and training to improve risk awareness and control ability.