Banana is a plant which grown in tropical and subtropical areas, and has economic importance. Plant parasitic nematodes in banana production areas cause significant crop losses annually. Previous studies showed that spiral nematodes (Helicotylenchus dihystera (Cobb, 1893) (Tylenchida: Hoplolaimidae), H. multicinctus (Cobb, 1893) (Tylenchida: Hoplolaimidae)) and root-knot nematodes (Meloidogyne incognita (Kofoid & White, 1919) (Tylenchida: Meloidogynidae)) and M. javanica (Treub, 1885) (Tylenchida: Meloidogynidae)) are widespread in banana production areas in Turkey. Plant parasitic nematodes are commonly found in banana field were identified and population fluctuations of spiral and root-knot nematodes were investigated monthly in Mersin. In this study, soil and root samples were collected monthly from a banana greenhouses in Bozyazi district of Mersin province between 2012 and 2014. Helicotylenchus multicinctus, H. dihystera, Meloidogyne incognita and M. javanica were identified in different population densities in Banana growing area and among them H. multicinctus was found as most dominant nemotod species. It was determined that population of H. multicinctus generally increased in April and decreased in Nowember and February in both year.