An X-ray dose management system comprising: an intraoral X-ray imaging device; an X-ray imaging element; an information reading device; and an information terminal, wherein the intraoral X-ray imaging device includes: an imaging condition setter that is used to set an imaging condition for performing intraoral X-ray imaging; an output information creator that creates output information including identification information of imaging time and date, dose information, and the imaging condition; and an information communicator that sends the output information to an external device by wireless communication, the X-ray imaging element includes: an X-ray image information obtainer that obtains X-ray image information acquired by X-ray imaging; and a wireless tag that receives the output information from the intraoral X-ray imaging device, the information reading device includes: an output information reader that reads the output information recorded in the wireless tag; and an information communicator that sends the read output information to the information terminal, and the information terminal includes: a patient information retriever that retrieves patient information on a patient subjected to X-ray imaging from an internal storage or an external database in which the patient information is stored; a communicator that receives the output information; and an output information processor that records the received output information and the patient information retrieved by the patient information retriever in association with each other in the internal storage or the external database. an intraoral X-ray imaging device; an X-ray imaging element; an information reading device; and an information terminal, wherein the intraoral X-ray imaging device includes: an imaging condition setter that is used to set an imaging condition for performing intraoral X-ray imaging; an output information creator that creates output information including identification information of imaging time and date, dose information, and the imaging condition; and an information communicator that sends the output information to an external device by wireless communication, an imaging condition setter that is used to set an imaging condition for performing intraoral X-ray imaging; an output information creator that creates output information including identification information of imaging time and date, dose information, and the imaging condition; and an information communicator that sends the output information to an external device by wireless communication, the X-ray imaging element includes: an X-ray image information obtainer that obtains X-ray image information acquired by X-ray imaging; and a wireless tag that receives the output information from the intraoral X-ray imaging device, an X-ray image information obtainer that obtains X-ray image information acquired by X-ray imaging; and a wireless tag that receives the output information from the intraoral X-ray imaging device, the information reading device includes: an output information reader that reads the output information recorded in the wireless tag; and an information communicator that sends the read output information to the information terminal, and an output information reader that reads the output information recorded in the wireless tag; and an information communicator that sends the read output information to the information terminal, and the information terminal includes: a patient information retriever that retrieves patient information on a patient subjected to X-ray imaging from an internal storage or an external database in which the patient information is stored; a communicator that receives the output information; and an output information processor that records the received output information and the patient information retrieved by the patient information retriever in association with each other in the internal storage or the external database. a patient information retriever that retrieves patient information on a patient subjected to X-ray imaging from an internal storage or an external database in which the patient information is stored; a communicator that receives the output information; and an output information processor that records the received output information and the patient information retrieved by the patient information retriever in association with each other in the internal storage or the external database.