The beach of Ilha Comprida is important site in the semipalmated plover (Charadrius semipalmatus) migration. This paper analyses the seasonal occurrence of the semipalmated plover at Ilha Comprida and the impact of human disturbance in order to avaluate the importance of the area as a stopover site. The sighted birds were counted and simultaneously they were registered the atmosphere where happened, activity type that they were accomplishing and the disturbance human if there was. The results show that Ilha Comprida areas seem to be an important stopover site during December, but not during winter (June, July and August), and the abundance of semipalmated plover may be reduced by 80% in July. The Ilha Comprida is stopover in the migration for the south and north and important area for foranging and rest, for the Charadrius semipalmatus.