A cardiopulmonary resuscitation training apparatus for infants, comprising: a body portion; a head portion including a head frame rotatably connected to the body portion; a tunnel portion including a tunnel frame installed on a neck of the body portion, and an upper catching protrusion extending from an upper side of the tunnel frame to a lower side of the tunnel frame; an airway portion including an airway tube installed to be in communication with a mouth of the head portion, and a hyperextension closure portion connected to an outside of the airway tube so as to be positioned below the upper catching protrusion; and a tube portion configured to connect the airway tube and an artificial lung to each other by passing through the tunnel portion between the upper catching protrusion and the hyperextension closure portion, wherein the hyperextension closure portion is spaced apart from the upper catching protrusion to open the tube portion when the head portion is tilted at an angle less than a hyperextension angle with respect to the body portion, and the hyperextension closure portion is in contact with the upper catching protrusion to close the tube portion when the head portion is tilted at the hyperextension angle or more with respect to the body portion; and wherein: the tunnel portion further includes a lower catching protrusion extending from a lower side of the tunnel frame to an upper side of the tunnel frame, the airway portion further includes a neutral closure portion connected to an outside of the airway tube so as to be positioned above the lower catching protrusion, the tube portion passes through the tunnel portion between the lower catching protrusion and the neutral closure portion, and wherein the neutral closure portion is in contact with the lower catching protrusion to close the tube portion when the head portion is in a neutral state with respect to the body portion, and the neutral closure portion is spaced apart from the lower catching protrusion to open the tube portion when the head portion is tilted at a predetermined angle or more with respect to the body portion. a body portion; a head portion including a head frame rotatably connected to the body portion; a tunnel portion including a tunnel frame installed on a neck of the body portion, and an upper catching protrusion extending from an upper side of the tunnel frame to a lower side of the tunnel frame; an airway portion including an airway tube installed to be in communication with a mouth of the head portion, and a hyperextension closure portion connected to an outside of the airway tube so as to be positioned below the upper catching protrusion; and a tube portion configured to connect the airway tube and an artificial lung to each other by passing through the tunnel portion between the upper catching protrusion and the hyperextension closure portion, wherein the hyperextension closure portion is spaced apart from the upper catching protrusion to open the tube portion when the head portion is tilted at an angle less than a hyperextension angle with respect to the body portion, and the hyperextension closure portion is in contact with the upper catching protrusion to close the tube portion when the head portion is tilted at the hyperextension angle or more with respect to the body portion; and wherein: the tunnel portion further includes a lower catching protrusion extending from a lower side of the tunnel frame to an upper side of the tunnel frame, the airway portion further includes a neutral closure portion connected to an outside of the airway tube so as to be positioned above the lower catching protrusion, the tube portion passes through the tunnel portion between the lower catching protrusion and the neutral closure portion, and wherein the neutral closure portion is in contact with the lower catching protrusion to close the tube portion when the head portion is in a neutral state with respect to the body portion, and the neutral closure portion is spaced apart from the lower catching protrusion to open the tube portion when the head portion is tilted at a predetermined angle or more with respect to the body portion. the tunnel portion further includes a lower catching protrusion extending from a lower side of the tunnel frame to an upper side of the tunnel frame, the airway portion further includes a neutral closure portion connected to an outside of the airway tube so as to be positioned above the lower catching protrusion, the tube portion passes through the tunnel portion between the lower catching protrusion and the neutral closure portion, and wherein the neutral closure portion is in contact with the lower catching protrusion to close the tube portion when the head portion is in a neutral state with respect to the body portion, and the neutral closure portion is spaced apart from the lower catching protrusion to open the tube portion when the head portion is tilted at a predetermined angle or more with respect to the body portion.