This study carried out a survey during Spring and Summer in 2007 and collected information from people all around Middle Governorate area in Gaza Strip, Palestine. Total number of informants about 145 were interviewed in using a previously prepared questionnaire which related to the environmental and floristic knowledge. The questionnaire addressed each interviewed informant and included several aspects. Thirteen species of wild plants were mentioned by the interviewed informants as the best species for grazing in our study area. The surveyed study demonstrated that there were thirty additional annual plant species that were recognized, under grazing pressure as compared with the species mentioned by the interviewed informants. Various ecological conditions create a mosaic of different plant species. Some of the characteristic species occurring in different habitats of the coastal area in Gaza Strip were examined. The surveyed study demonstrated that there were thirteen plant species with a high adaptability to salinity can grow in the study area. Solanum elaegnifolium, was a common plant species, with a high distribution in all locations of the study area. Phragmites australis and Typha domingensis were occupied at wetland edges, rich with sewage water.