Abstract: Volumn resistivity of semi-conductive shield is one of the important indicators to reflect electrical properties of cables. Currently, volume resistivity detection of semi-conductive shield in large-scale cables exists some problems, such as uneven surface, low sample preparation efficiency and unstable resistance test data. In the paper, large-scale cutting machine was adopted to solve sample preparation problem of large-size cables. A fixed mold and a copper sheet mold were made to improve the process. The fixed mold method was used to replace the self-adhesive copper tape method for volume resistivity detection of semi-conductive insulation shield, and the copper sheet mold method was used to replace the conductive paste coating method for volume resistivity detection of semi-conductive conductor shield. Taking 64/110 kV cable as an example, volume resistivity of semi-conductive shield was carried out for cables with different nominal cross-sectional areas. Results showed that the new process and detection method could meet test requirements, improve volume resistivity detection efficiency of semi-conductive shield for large-scale cables, and enhance the stability of detection data.