Baltim beach is one of the famous public resorts in Egypt Baltim Beach is located on the northern coast of Egypt. Fourteen segments of detached breakwater were constructed in Baltim beach during year 2007 to minimize the erosion in this coastal zone. The data of Baltim beach were provided by Landsat7 satalite and proccseed by software program ERDAS IMAGINE 2013 which gives high resolution of the studied area. Then the shorelines were digitized by using software ARC GIS 10.1. This study introduce the shoreline response due to the construction of the detached breakwater using the Digital Shoreline Analysis System (DSAS). The analysis shows. Before construction of 14 detached breakwaters at Baltim resort from a year 2000 to 2007, the accretion has filled the zone between the shoreline and the detached breakwaters. This accretion is ranging from 4 to 53 m/year alongshore of the first 7-km in the west of Baltim beach. The maximum erosion is also occurred between detached breakwater No10 and No11 at the average rate of changes ranging from 3 to 15 m/year. After construction of 14 detached breakwaters from a year 2007 to 2016, a high accretion rates in behind the breakwater no 14 with the maximum rate of 60 m /year. The predicted shoreline from a year 2014 to 2060 at the area of fourteen detached breakwaters of Baltim beach is accretes highly by average rates ranging from 4 to 12 m/year