The invention discloses a calling-out method of a mobile phone desktop search box. A drop-down menu notification bar is arranged above any operation interface of a screen; a search box is arranged in the drop-down menu notification bar, and a retrieval result list view is arranged below the search box; the search range of the search box covers a memory card and a storage space in the mobile phone; and the search content is set. The search box calling-out method comprises the following steps that: 1, a user clicks on the drop-down menu notification bar of any operation interface; 2, the user finds the search box from the drop-down menu notification bar and inputs a search keyword in the search box; 3, a background program searches the memory card and the storage space in the mobile phone, and displays the search keyword on the retrieval result list view; 4, the user selects the search content according to the retrieval result list view and enters the related application program; and 5, the search is completed. According to the invention, a search box can be called out on any operation interface, thereby being more convenient and quicker and more humanized and improving the efficiency.