Abstract:Geotechnical engineering investigation can provide accurate geological data for construction projects and plays a very important role in ensuring the quality of construction projects. Based on an overview of geotechnical engineering investigation, this article elaborates in detail on the impact of geotechnical engineering investigation on the quality of construction projects. Based on this, a series of optimization measures are proposed, including improving the level of investigation technology, establishing a management system for the investigation process, and establishing a quality supervision mechanism. The results indicate that the application of these optimization measures can effectively improve the accuracy and reliability of geotechnical engineering investigation, providing solid support for high-quality construction of building projects.