Based on field survey and indoor data sorting, a technique of balanced section across the Lanping-Jinding region was applied to a NW-SN geological profile to reconstruct the crust shortening history from Cretaceous and to understand the nature of the basin and to check up its geological structure explained correctly and to make a digital analysis. The results showed that the total length about the Cretaceous crust shortening was 2.938 km from the under section of Jingxing Formation to Nanxin Formation, and Nanxin Formation had the most strongest tectonic movement.