A laboratory experiment was carried out at Seed Technology Research Unit at Mansoura, Dakahlia Governorate, Field Crops Research Institute, Agricultural Research Center, Egypt, to evaluate the effect of storage methods (normal storage in cotton bags and sealing storage in plastic jars and metal packages) and fumigation with phosphine at 0, 3, 5 and 7 tablets/m³ on storage efficacy, germination and seedlings parameters of wheat during different storage periods (3, 6 and 9 months after harvesting). The most important results can be summarized as follows:- Increasing storage periods of wheat seed from 3 to 6 and 9 months significantly affected storage efficacy characters (insect infestation and weight loss percentages), final germination percentage and seedling parameters (seedling length, root length, shoot length and seedlings fresh and dry weights). - The best results of storage efficacy of wheat recorded when sealed stored in metal packages, followed sealed stored in plastic jars and lastly in cotton bags. Whereas, highest germination and seedling parameters were recorded when sealed stored in metal packages, followed by normal stored in cotton bags and lastly stored in plastic jars. - The lowest percentages of insect infestation and weight loss in wheat seeds were obtained from fumigation with phosphine at the rate of 7 tablets/m³. While, maximum values of germination and seedling parameters were obtained from fumigation with phosphine at the rate of 5 tablets/m³. This study recommended that fumigation wheat seeds before storage in metal packages with phosphine at the rate of 5 tablets/m³ under the environmental conditions of the experiment in Mansoura, Dakahlia Governorate, Egypt.