An end-expiratory CO 2 guided tracheal intubation device, comprising an intubation tube, an end-expiratory CO 2 catheter, a suction tube, an airbag, and an inflatable tube, wherein: the end-expiratory CO 2 catheter partially penetrates the sidewall of the intubation tube, and one end of the end-expiratory CO 2 catheter extends beyond an end of the intubation tube, and the other end thereof is connected to an end-expiratory CO 2 sensor; the suction tube partially penetrates the sidewall of the intubation tube, and one end of the suction tube extends beyond an end of the intubation tube, and the other end is connected to an air pump; the airbag is sleeved on an outer wall of the intubation tube; the inflatable tube partially penetrates the sidewall of the intubation tube, and one end of the inflatable tube is connected to the airbag and the other end is connected to an air supply device; the sidewall of the intubation tube is provided with an end-expiratory CO 2 catheter installation groove and a suction tube installation groove; the end-expiratory CO 2 catheter comprises a first end tube segment, a retractable first tube segment and a first tail tube segment, which are connected in sequence; the first end tube segment is connected to the end-expiratory CO 2 sensor; the first tube segment is disposed in the end-expiratory CO 2 catheter installation groove, and is sleeved with a first spring, one end of the first spring is abutted on a first stop block provided on the first tail tube segment, and the other end thereof is abutted on an end wall of the end-expiratory CO 2 catheter installation groove; the first tail tube segment extends to the outside of the intubation tube; the suction tube comprises a second end tube segment, a retractable second tube segment and the second tail tube segment, which are connected in sequence; the second end tube segment is connected to the air pump; the second tube segment is disposed in the suction tube installation groove, and is sleeved with a second spring; one end of the second spring is abutted on a second stop block provided on the send tail tube segment, and the other end thereof is abutted on the endwall of the suction tube installation groove; the second tail tube segment extends to the outside of the intubation tube. the end-expiratory CO 2 catheter partially penetrates the sidewall of the intubation tube, and one end of the end-expiratory CO 2 catheter extends beyond an end of the intubation tube, and the other end thereof is connected to an end-expiratory CO 2 sensor; the suction tube partially penetrates the sidewall of the intubation tube, and one end of the suction tube extends beyond an end of the intubation tube, and the other end is connected to an air pump; the airbag is sleeved on an outer wall of the intubation tube; the inflatable tube partially penetrates the sidewall of the intubation tube, and one end of the inflatable tube is connected to the airbag and the other end is connected to an air supply device; the sidewall of the intubation tube is provided with an end-expiratory CO 2 catheter installation groove and a suction tube installation groove; the end-expiratory CO 2 catheter comprises a first end tube segment, a retractable first tube segment and a first tail tube segment, which are connected in sequence; the first end tube segment is connected to the end-expiratory CO 2 sensor; the first tube segment is disposed in the end-expiratory CO 2 catheter installation groove, and is sleeved with a first spring, one end of the first spring is abutted on a first stop block provided on the first tail tube segment, and the other end thereof is abutted on an end wall of the end-expiratory CO 2 catheter installation groove; the first tail tube segment extends to the outside of the intubation tube; the suction tube comprises a second end tube segment, a retractable second tube segment and the second tail tube segment, which are connected in sequence; the second end tube segment is connected to the air pump; the second tube segment is disposed in the suction tube installation groove, and is sleeved with a second spring; one end of the second spring is abutted on a second stop block provided on the send tail tube segment, and the other end thereof is abutted on the endwall of the suction tube installation groove; the second tail tube segment extends to the outside of the intubation tube.