The invention relates to the technical field of building construction, in particular to an outdoor wall attaching tower crane. The outdoor wall attaching tower crane comprises a tower crane body (1), a fixed connection mechanism arranged on the tower crane body (1), and a climbing structure. The fixed connection mechanism is provided with an upper pull force structure (3) arranged on the tower crane body (1) and capable of being fixed relative to a building frame (2), and a lower supporting structure (4) located below the upper pull force structure (3) and abutting against the building frame (2), and the upper pull force structure (3) and/or the lower supporting structure (4) are/is detachably fixedly connected relative to the outer wall structure of the building frame (2). The climbing structure is provided with a lifting driving mechanism (5) arranged between the tower crane body (1) and the building frame (2) and providing moving driving force. The outdoor wall attaching tower crane not occupying the building inner space and convenient to dismount and mount is provided.