The invention discloses an installation technology of a power cable aluminum alloy waterproof drawing head. The installation technology is characterized by comprising the following steps: the end of the cable drawing head is processed; the drawing head is installed; confining pressure processing is carried out on the drawing head; a steel drawing head body is installed; a heat-shrinkable tubing is installed. Compared with a steel drawing head, an aluminum tube of the aluminum alloy drawing head and an aluminum jacket of the cable are more easily welded into a whole, an aluminum alloy welding welded joint can bear larger external force, the aluminum tube of the aluminum alloy drawing head allows the diameter changing scope of the aluminum jacket of the cable to be larger, the whole extrusion molding is adopted in the aluminum tube of the drawing head, strength is higher, organization is more compact, and the installation technology has the good waterproof and dampproof performance.