Abstract: An X-ray imaging apparatus and an X-ray imaging system including the X-ray imaging apparatus are disclosed. The X-ray imaging apparatus comprises: a rail assembly, a strut assembly, an X-ray imaging assembly mounted on the strut assembly, and a chargeable and dischargeable power supply apparatus mounted on the strut assembly, wherein the power supply apparatus is used for supplying power to the X-ray imaging assembly to generate X-rays and complete X-ray imaging. The X-ray imaging system comprises the above-mentioned X-ray imaging apparatus and a plurality of X-ray receiving apparatuses. The X-ray imaging apparatus can operate in a wide range to meet different X-ray imaging requirements, and the X-ray imaging system can complete X-ray imaging on a large number of patients in a short period of time.