Online X-ray fluorescence analysis automatic calibration device and spent fuel post-processing system

The utility model discloses an on-line X-ray fluorescence analysis automatic calibration device and a spent fuel post-processing system. The automatic calibration device comprises a sample bottle, flow cells and a measuring mechanism, a plurality of sample cells are arranged in the sample bottle side by side and used for storing standard sample solutions with different concentrations, the flow cells are communicated with the process pipeline and used for storing solutions to be measured, flow cell windows are formed in the flow cells, sample cell windows are formed in the sample cells, and the measuring mechanism is arranged outside the box chamber; the detector is electrically connected with the flow cell to measure a plurality of first characteristic X-rays emitted by elements to be measured in a standard sample solution in the sample cell and second characteristic X-rays emitted by elements to be measured in a solution to be measured in the flow cell, and the processing unit is electrically connected with