The invention discloses a bidirectional forced lung circulation oxygen supply machine, and relates to the technical field of medical equipment. The device is characterized by comprising a body, a high-pressure circular gas supply bin, a negative-pressure circular waste gas recovery bin, a gas transmission and supply source, a rapid vacuum pump, a gas guide pipeline, a gas transmission pipeline, a three-way pipe, an exhaust port, a gas inlet pipeline, a waste gas recovery pipeline, a connecting pipeline, a breathing connecting part, a gas inlet throttle, a gas outlet switch control valve, a gas outlet throttle, a negative pressure bin air inlet throttle, an air inlet switch control valve, a negative pressure bin air outlet throttle, an air pressure control valve, a control processor, a timer, an electrical storage device, a starting control switch and a manual control board. According to the invention, oxygen inhalation can be provided for a patient; when the patient with respiratory failure is about to lose the respiratory function, the patient can be forced to perform an inspiration function and an expiration function, so that the lung relaxation of the patient is forced, which is equivalent to cardio-pulmonary resuscitation in the body of the patient, and the rescue success rate of the patient can be improved; therefore the patient can obtain the best rescue effect.