Examination bed of scanning system

The utility model provides an examination couch of a scanning system. The examination couch comprises a translation platform capable of translating along the horizontal direction relative to the ground, a couch board fixing plate capable of translating along the vertical direction relative to the translation platform, and a couch board mounted at the top of the couch board fixing plate, the shape of the bed board fixing plate is set to enable at least one part of the bed board fixing plate to extend into the scanning system; the side, facing the scanning system, of the translation platform is provided with a vertical mounting wall which is located outside the scanning system, and the top edge of the bed board is tightly attached to the vertical mounting wall or is spaced from the vertical mounting wall by a fixed distance. Therefore, according to the examining table of the scanning system, under the condition that the length of the bed board is the same, the effective length of the portion, stretching into th