This invention is generally directed to a new connecting structure for connecting the bodies of hand-operated tools to their handles. It solves the technical difficulty in standardizing the connection of hand-operated tools and handles. The technical strategy involves separating the connecting structure to the connecting segment and handle fix segment. The axial opening of the handle fix segment fits the shape of handle, and handle is installed into the handle fix segment. The present invention has the advantages of simple design, convenience for mass manufacture, ease and reliability in connecting, assembling, and adjusting standardized connection process, and cost-efficiency in production and transportation.