Aimed at the defect of easy deterioration of fish in the packaging and storage process, a new type of packaging film for fish packaging was developed by using fresh grapefruit peel as raw material, and then mixed with polyvinyl alcohol (PVA). The basic properties of the composite film such as haze and transmittance, tensile strength and water absorption rate were determined. The results showed with the mass ratio of 5% and 7% of pomelo pulp /PVA, the composite film performed well, which could be used as food packaging materials. At the same time, the color, flavor, weight loss rate and the total number of colonies of fish during storage were detected. The results showed that the fresh-keeping effect of composite films performed differently with different mass ratio of pomelo pulp /PVA, with the mass ratio of 5% and 7% of pomelo pulp /PVA, the preservation effect of the composite film was relatively better.