The invention relates to an overhead and butt-joint method for a box-type headframe, which is characterized in that the method comprises the following steps of: a. manufacturing the box-type headframeas two parts: a mainbody headframe (1) and a hoisting headframe (5); b. installing a well head vertical frame (8) and the mainbody headframe (1) at the proper place according to a normal installationmethod; c. adopting a hoisting equipment to hoist the hoisting headframe (5) so as to carry out butt-joint positioning with the mainbody headframe along a positioning block; and d. welding the jointof the hoisting headframe and the mainbody headframe, thus forming the box-type headframe entirety. The method has the advantages of: 1. manufacturing and installing the box-type haedframe by section,breaking through the traditional hoisting process, thus reducing the space occupying of the construction field; 2. carrying out installation without stopping production, thus avoiding the loss due toproduction stopping; and 3. being capable of being applied to the technical renovation engineering of old coal mine and reducing the removal expense of the original building and the loss owning to production stopping.