The invention belongs to the technical field of auxiliary medical devices, and concretely relates to a device used for preserving a lung under low temperature and ventilated situations during a non-heart-beating-donor (NHBD) lung transplant. The device comprises a medical elastic rubber bag and an outer case, wherein the medical elastic rubber bag is used for placing a complex of the heart and the lung, and is provided with an inlet and an outlet for a low-temperature lung preservation solution, a central fixing support therein and a temperature sensor on an inner wall; the medical elastic rubber bag is arranged in the outer case; mixtures of ice and water are arranged between the outer case and the medical elastic rubber bag and can synergistically maintain the low-temperature state of the medical elastic rubber bag. In addition, two tee pipe joints are provided for respectively connecting the inlet and the outlet of the low-temperature lung preservation solution, left and right ventricular catheters and internal space of the medical elastic rubber bag. The device provided by the invention not only can realize filling and immersing of the low-temperature lung preservation solution, but also can sequentially ventilate in tracheae, thereby combining respective advantages, synergistically confronting warm ischemia injury of NHBD lung, and improving quality of the NHBD lungs.