The invention discloses a tunnel secondary lining steel bar framework construction equipment and an application thereof. The tunnel secondary lining steel bar framework construction equipment is characterized in that a trolley rail is paved along the orientation of a tunnel; a trolley frame consisting of a portal steel frame and a portal truss can move along the trolley rail under the driving of a motor; an arched steel frame is composed by hinging arch crown frames and side arch frames arranged in section, and are supported by the trolley support. According to the tunnel secondary lining steel bar framework construction equipment, the arched steel frame can be utilized to form a steel bar framework locating jig, an operating platform can be arranged by taking the arched steel frame as a support, and further, cable duct mould bases can be installed at two sides of the portal steel frame, such that the construction equipment takes the installation of cable duct mould plates, as well as integrated construction of bar arrangement, binding, installation and hanging cloth pavement of a tunnel secondary lining steel bar framework and pavement of cable ducts into consideration to provide a safe and reliable working platform for procedure operations, therefore the engineering quality is improved, the potential safety hazards are reduced and the construction cost is reduced.