A connecting structure of a manual tool and its handle comprises a manual tool (1), a handle (4) and a handle connection trouser. The connection trouser is made up of a connection section (2) and a handle fixed section (3). Said fixed section forms an axial hatch vertical cylinder shape so that the handle could be inserted into it. The handle and the handle fixed section are fixedly connected through a connecting bolt (5). The connection structure in the invention has a simple structure and is convenient and safe to connect, assemble, adjust and change the manual tool. It is realized the standardization connection of the handle and the manual tool when using.