The oil repellent paper was prepared by using chitosan and cationic starch to produce oil and grease resistant material for food packaging. The influence of preparation condition on performance of the material was studied. The results showed that the oil and grease resistance of paper increases with mass fraction of oil repellent agent; the composite oil repellent agent prepared by substituting partial chitosan with cationic starch can achieve the same effect as pure chitosan and reduce production cost