The invention discloses a method for prolonging the storage period of prunus domestica. The invention provides a storage method of prunus domestica by integrating respective advantages of precooling, 1-methylcyclopropene (1-MCP) and Pulullan. The method particularly comprises the following steps of (1) putting prunus domestica instantly in a refrigerator of 0-4 DEG C after harvesting prunus domestica, and precooling for 12-24 hours; (2) fumigating fruit by 10-100ppm of 1-MCP gas for 12-24 hours in an environment of 0-4 DEG C; (3) soaking the fumigated fruit instantly by utilizing a 0.5-1% Pulullan solution for 1-5 minutes, or spraying the fruit directly by utilizing 0.5-1% Pulullan, airing, and storing into a storehouse of 0-4 DEG C. The method can be used for overcoming respective defects in the prior art by cooperation, can effectively prolong the storage period of prunus domestica, and has the advantages of good effects, high safety and the like.