A stationary real-time CT imaging system, including a bed control unit, a CT reconstruction and interface unit, a power control unit, a main processor, and a scanning apparatus, wherein: the scanning apparatus includes an annular scanning x-ray source and an annular photon-counting detector, said annular scanning x-ray source and said annular photon counting detector being in different planes parallel to each other; the annular scanning x-ray source includes a plurality of scanning x-ray sources connected to each other and arrayed in a ring to form a ring structure, the annular photon-counting detector includes a plurality of photon-counting detector modules connected to each other and arrayed in a ring, said photon-counting detector module having an exposure data acquisition range corresponding to the physical dimensions thereof and each photon-counting detector module comprising a plurality of photon counting detector units wherein each unit comprises photo-counting detector elements comprising a matrix of pixels; the scanning x-ray source emits narrow beam x-ray in accordance with a preset emitting timing projecting to a corresponding photon counting detector module, penetrating through an object, the photon counting detector modules send corresponding exposure data information into said CT reconstruction and interface unit via the scanning apparatus and the main processor, the CT reconstruction and interface unit completes real time reconstruction of an image and visual reproduction of said image at up to 1024 frames per second, wherein by means of controlling work timing of the scan x-ray sources and the photon counting detectors, said photon counting detectors capable to control acquisition location, it is ensured that a narrow beam x-ray exposes on only one small area at each moment while only pixels of the photon counting detector in this exposed small area are ready to acquire exposure data and pixels of the photon counting detectors not in this small area do not work. the scanning apparatus includes an annular scanning x-ray source and an annular photon-counting detector, said annular scanning x-ray source and said annular photon counting detector being in different planes parallel to each other; the annular scanning x-ray source includes a plurality of scanning x-ray sources connected to each other and arrayed in a ring to form a ring structure, the annular photon-counting detector includes a plurality of photon-counting detector modules connected to each other and arrayed in a ring, said photon-counting detector module having an exposure data acquisition range corresponding to the physical dimensions thereof and each photon-counting detector module comprising a plurality of photon counting detector units wherein each unit comprises photo-counting detector elements comprising a matrix of pixels; the scanning x-ray source emits narrow beam x-ray in accordance with a preset emitting timing projecting to a corresponding photon counting detector module, penetrating through an object, the photon counting detector modules send corresponding exposure data information into said CT reconstruction and interface unit via the scanning apparatus and the main processor, the CT reconstruction and interface unit completes real time reconstruction of an image and visual reproduction of said image at up to 1024 frames per second, wherein by means of controlling work timing of the scan x-ray sources and the photon counting detectors, said photon counting detectors capable to control acquisition location, it is ensured that a narrow beam x-ray exposes on only one small area at each moment while only pixels of the photon counting detector in this exposed small area are ready to acquire exposure data and pixels of the photon counting detectors not in this small area do not work.