Determination of the sequence of intersecting lines has always been one of the difficult problems in the field of forensic science document inspection. Considering this, we first use a new technology for optical tomography, specifically optical coherence tomography (OCT), to study the sequence of intersecting lines. A frequency-domain OCT system with a center wavelength of 900nm is used to perform imaging and inspection on three different types of intersecting lines samples, to compare the feature differences of 2D tomographic OCT images of the intersecting lines of different types of samples and to analyze the feature differences. Preliminary experimental results show that OCT technology can provide an effective method for the judgment of the sequence of intersecting lines and can lay a foundation for supplementing and enriching the existing ecosystem of measurement techniques.