本文研究了基于 Ｉ Ｃ Ｔ 切片图象的实体建模技术，重构了产品的实体模型．针对装配体 Ｉ Ｃ Ｔ 切片图象的特点，提出了切片采样，精确识别轮廓控制点的算法，基于简单环的内外边界识别，实体建模，基于二维图形特征和上下切片特征之间的关系识别三维特征，通过以上方法提高了实体建模的精度。 In this paper, the solid modeling technology based on I C T slice images is studied and the solid model of the product is reconstructed. Aiming at the features of I C T slice images, an algorithm of slice sampling, accurate identification of contour control points, internal and external boundary recognition based on simple rings, solid modeling, the relationship between two-dimensional graphics features and the features of the upper and lower slices Recognition of three-dimensional features, through the above method to improve the accuracy of solid modeling.