Industrial computed tomography (CT) can non-destructively analyze the structural composition, material distribution, density variation and other internal information of an object, and is one of the common methods for non-destructive analysis of the structural characteristics and material distribution of cultural relics. Due to the variety of materials, shapes and thicknesses of cultural relics, the scanning results of industrial CT can be accompanied by certain artifacts which will seriously worsen the image quality, and even make it impossible to accurately determine the internal structure of cultural relics. Artifacts in CT imaging originate from various factors:artifacts caused by physical factors are related to the CT projection data acquisition process; artifacts caused by sample factors are related to the placement, structure and material of the sample; artifacts caused by CT reconstruction algorithms are related to the CT equipment scanning method and its algorithms in the software. Some of these artifacts can be reduced by software calibration, but in many cases, proper sample placement and selection of appropriate CT scanning parameters is one of the best ways to reduce CT artifacts.