Abstract: The manufacturing method of metallographic laminating paper (AC paper) used for on-site test was introduced, including the selection of raw materials, the raw material compositions, the preparation of raw liquid, the production of film, the preservation requirements of the film and so on. Combining the performance requirements and production process of the AC paper, the possible problems in the production process and their solutions were discussed. Finally the application effect was verified through examples. The results show that the method of making AC paper was simple. The detail of the microstructure picture copied with the AC paper was clear, and the contrast was moderate and high, and it could accurately reflect the microstructure of the tested workpieces.