Integrated miniature X ray generator with long life

An integrated minitype X-ray generator with long service life comprises an X-ray tube (1) and a high-voltage generator (2). In the integrated minitype X-ray generator with a long service life, the X-ray tube and the high-voltage generator are directly connected and then insulated and encapsulated as a whole. Since the X-ray tube and the high-voltage generator are encapsulated as a whole, high voltage cables of intermediate connection are saved so as to preclude the possibility of failure caused by the poor connection of the high voltage cables, thus improving the reliability of the whole X-ray generator. Meanwhile, due to the integrated encapsulation of the X-ray tube and the high-voltage generator, encapsulation material can be utilized for improving the insulation strength of the X-ray generator and reducing the encapsulation cost at the same time. The integrated minitype X-ray generator with long service life is internally provided with a feedback control circuit which is used for controlling the filament voltage of the X-ray tube by the working current feedback of the X-ray generator, thus causing the filaments of the X-ray tube to be in a warm-up state when not in operation.