Portable X-ray irradiator

The invention relates to a portable X-ray irradiator. The portable X-ray irradiator comprises a main body, wherein the main body comprises a box body, an X-ray generation assembly, a high-voltage power supply assembly, an irradiation protection box and an irradiation control box which are integrated in a cavity of the box body; the X-ray generation assembly is integrated with the high-voltage power supply assembly to form an integrated X-ray machine head; the integrated X-ray machine head is fixedly arranged on the upper surface of a top plate of the irradiation protection box; the irradiation control box is arranged on the side of the irradiation protection box; a system cooling assembly is arranged on a box body shell corresponding to the top of the integrated X-ray machine head. According to the portable X-ray irradiator, all the functional assemblies are integrated in a small box body, so that the portable X-ray irradiator is compact and reasonable in structure, complete in function, low in energy consumption, low in manufacturing cost and use cost, small in size, light in weight, convenient to use and move and high in practicability; the defects that the existing X-ray irradiator is large in size, heavy in weight, low in convenience for using and carrying and high in cost can be overcome; and the basic guarantee is provided for meeting the application requirements on industrial and biological research.