A blood irradiator comprises an X-ray source (10), multiple containers (20) for holding blood or preparations, and a driving device (30) configured to drive respective containers (20) to rotate independently. The multiple containers (20) are disposed around the X-ray source (10) at intervals, and each of the containers (20) faces the X-ray source (10). In the blood irradiator, the driving device (30) is used to drive the respective containers (20) containing blood or the preparations and surrounding the X-ray source (10) to rotate independently, thereby effectively increasing a utilization efficiency of an X-ray irradiated by the X-ray source (10). Uniformity of irradiation of blood or the preparations can be improved significantly by arranging fronts and backs of the respective containers (20) to face the X-ray source (10) alternately. Moreover, by controlling the fronts and the backs of the respective containers (20) to be irradiated by the X-ray alternately, an amount of time required for a single irradiation operation can be reduced while uniformity of irradiation is ensured, thereby reducing energy consumption of the single irradiation operation (energy consumed for an operation of an X-ray tube and heat dissipation of a heat dissipation system), and accordingly reducing operation costs of related devices.Linvention concerne un irradiateur de sang qui comprend une source de rayons X (10), de multiples contenants (20) pour contenir le sang ou des préparations, ainsi quun dispositif dentraînement (30) conçu de manière à amener des contenants respectifs (20) à tourner indépendamment. Les multiples contenants (20) sont disposés autour de la source de rayons X (10) à intervalles et chacun des contenants (20) fait face à la source de rayons X (10). Dans lirradiateur de sang, le dispositif dentraînement (30) est utilisé pour amener les contenants respectifs (20) contenant du sang ou les préparations et entourant la source de rayons X (10) à tourner indépendamment, per
