Six cases of frontal osteoma had been operated with assistance of endoscopic surgery. Patient age ranged from 34 to 59 years. The diameter of the masses varies from 8 to 14 mm. The access incision was hidden behind the frontal hairline and the dissection plane went in the subperiosteal layer. The injury of the nerve branch and vessel can be easily avoided and endorsed by manipulating the endoscope. The average length of the procedure was 59.5 minutes. There is no complication such as scalp sensation impairment or hematoma over the forehead or scalp area. The elimination of the forehead osteoma can be executed at the forehead area scarlessly by the assistance of the endoscopic-assisted surgery.