The China-Pakistan Economic Corridor (CPEC) is an important part of the "Belt and Road" construction, mainly involving China and Pakistan. In recent years, affected by factors such as earthquakes in Pakistan and rising global temperatures, disasters such as collapses, landslides and debris flow have occurred frequently in CPEC, affecting the implementation of the national strategy and the safety of people's lives and property in surrounding countries. Therefore, it is of great significance to strengthen the detailed investigation of the development of debris flow disasters within the scope of the China-Pakistan Economic Corridor, build a corresponding database, analyze their distribution laws, and carry out debris flow risk zoning. The article focuses on the foreign part of the CPEC, through optical image remote sensing interpretation and statistical analysis of the development and distribution of debris flow disasters in the regional study area, selects elevation, aspect, distance from fault, distance from water system, NDVI, seismic peak acceleration (PGA) 6 evaluation indicators, using probabilistic comprehensive discrimination method to construct a regional debris flow susceptibility evaluation model, superimposing annual average rainfall indicators, realizing regional debris flow hazard zoning, and providing services for the construction of major traffic projects in the CPEC. The results show that the debris flow risks in the study area are mainly very low hazard and low hazard, accounting for 49.35% and 25.41%, respectively, mainly distributed in the Indus River Plain; medium hazard accounts for 10.75%, mainly in the southwest. In the plateau area, rainfall-type debris flows are the most developed; high-hazard and extremely-high-hazard debris flows account for 11.09% and 3.41%, respectively, and are mainly distributed in the northern plateau area, where glacial debris flows are the most developed. With the change of topography, the source of debris flow increases, and the hazard of debris flow development increases due to the influence of glaciers ablation and rainfall.