The reconstruction of an existing railway is important for railway reformation or double-track design. Obtaining the curve parameters of the railway and the location of the main stake accurately and rapidly is the key issue for existing railway reconstruction. A new method based on point cloud data is proposed in this paper. https://safeersappliancers.shop/product-category/samsung-rz32m7120ww-free-standing-315-litres-a-upright-freezer-white/