In this work, hydroxyethylecellulose (HEC)/nano graphene oxide (NGO) is characterizaed in order to produce biodegradable and enviromentally friendly packaging film. Poly hydroxyethyle cellulose is a water-soluble biocompatible polymer and graphene oxide nano particles are used besides to improve the properties in order to compensate low mechanical and physical strength of these biopolymers. Graphene oxide due to its layered strucrure could aid to improve the mechanical and barrier properties. For this purpose, nanocomposites including 0, 0.5 and 1 wt% of graphene oxide are prepared by casting method to produce HEC/NGO films. Scanning electron microscopy and atomic force microscopy are used to characteriza the surface morphology. In addition, mechanical properties are evaluated by tensile tests; on the other hand, thermal stability of films is determined by thermal analysis. Graphene oxide causes increase in modolus, tensile strength at break, glass transition temprature and thermal stability of the obtained films. According to tensile test results, the samples containing 1 and 2% HEC films indicated higher modulus (Average for 5 samples: 568.13MPa) for 2 wt% HEC film in comparison with that of 1 wt% HEC containing films, this results led to the use of 2 wt % HEC for further investigations.