The invention discloses a field CT (computed tomography) shelter. The shelter body disclosed by the invention is of a manual push-pull turn-over double-expansion plate structure, wherein an H-shaped rack is arranged at the front part of the shelter; the internal part of the shelter is divided into a CT control room and a CT scanning room; the CT control room is arranged at the front part of the shelter; an image collecting work station, an image processing work station, a medical display, a work chair, a film viewer and a diagnostic report printer are arranged inside the CT control room; and the CT scanning room is provided with a CT host computer, a scanning rack, a scanning bed, a CT damping bracket and a medical film printer. The field CT shelter can be loaded and transported by a self-loading car, and has strong mobile capability; and a CT device and efficacy support facilities are arranged inside the field CT shelter, and guarantee can be provided for CT inspection of a shelter hospital.