A nondestructive inspection apparatus with integrated power supply comprises a molded power supply section (14) having a resin-molded high voltage (e.g. 160 kV) generating section (15) secured to the base of a tubular section (2). The durability and handlability are improved by omitting a high voltage cable. Since the high voltage generating section (15) is confined in a molding resin, the degree of freedom in the arrangement of the high voltage generating section (15) within the mold is enhanced significantly. Furthermore, an X-ray generating unit (1) can be installed stably in the nondestructive inspection apparatus (70) by disposing the heavy molded power supply section (14) under a target (10).