Da Nang Bay is the key economic development area of Da Nang City, especially with domestic and international maritime activities, so the risk of oil spill is obvious, which will greatly affect the economy and people's lives. The NOAA Environmental Sensitivity Index (ESI) guidance document was issued to assess the extent of oil spill vulnerability in order to identify sensitive areas for potential contamination. appropriate preparedness and response plans. ESI maps are comprised of three types of information:Shoreline classification; biological Resources and Human–Use. The article focuses on studying the problem of shoreline classification, in particular, the study on building the shoreline sensitivity index of Da Nang bay using the guidance document on environmental sensitivity index (ESI). The study uses the water edge of the 1:50,000 scale topographic map as the baseline in combination with the field survey to classify the shoreline according to ESI. The results give ESI shoreline classification map and shoreline sensitivity map, thereby providing necessary information for ESI environmental sensitivity mapping.