The invention relates to a pipeline weld joint automatic labeling method based on a Revit platform. The pipeline weld joint automatic labeling method comprises the following steps: 1, establishing a BIM of a pipeline, and establishing a platform by taking Revit as graphic support
software; and 2, placing a workpiece under the platform, classifying
pipe weld problems, carrying out pipeline weldingseam labeling analysis; filtering out all pipelines in the current three-dimensional view; traversing all pipelines to obtain parameter information of a starting end pipeline, a pipeline connector andall pipelines, calculating the length of the pipelines, solving the number of weld joints, sorting the pipeline connectors, labeling from the starting connector, calculating whether the length of thepipelines is larger than the length N of a single steel
pipe or not, and conducting labeling at the position N automatically when the length is larger than N. The pipeline weld joint automatic labeling method has the advantages that (1) one-key labeling is realized quickly; (2) the labeling is accurate; (3) serial numbers can be marked, and pipeline
diameter and material information can be pickedup; and (4) the size is accurate, the construction is more facilitated, and the weld joint position needing flaw detection can be quickly found.