Plant diversity in Palestine in general and West Bank in particular required elaborated investigation to highlight its status and the factors by which it is affected. One of the urgent issues that aroused lately is the detection of its status in Tulkarm area due the allocation of the Gishori Industrial Complex in this area. This was achieved via floristic analysis conduction to detect possible effect of the Gishori Industrial Complex presence on different plant taxa levels in Tulkarm area. Therefore, plant’s specimens were collected from an experimental area (Ertah: opposite to the factory) and a control area (Thenabeh: far from the factory) on which floristic analysis and plant life-forms examination was carried out and subsequent comparison between them. The obtained results of the floristic analysis revealed the presence of 57 and110 plant species belonging to 45 and 89 genera and 18 and 35 families in Ertah and Thenabeh, respectively. The plant life form analysis showed that the dominant plant life-forms in Thenabeh and Ertah areas separately are annuals, hemicryptophytes and chamaephytes (74 & 65%; 31.4 & 25.4% and 10.1 & 5.2%, respectively). In conclusion, the higher plant diversity in Thenabeh than Ertah area at different studied taxa levels could be referred to the nearness of Ertah to Gishori Industrial Complex in comparison to the remoteness of Thenabeh.