The invention in a rust inhibitor press-in method that allows rust to penetrate and spread widely to position the reinforcement is reinforcement by injecting a corrosion inhibitor for a certain period of time the concrete inside to a high pressure by using a rust inhibitor press-in device after drilling a rust inhibitor press-in hole in the reinforced concrete structure It relates, by selecting the location to examine the location of the corroded reinforcement to diagnose and corrosion of reinforced concrete structures and injecting corrosion inhibitor forming a punched hole; The step of installing an anchor fixed in the perforated holes; Coupling a corrosion inhibitor injection cylinder through the connecting pipe at one end of the fixed anchor of exposure to the puncturing entrance hole; And through the pumping pressure of the corrosion inhibitor injection cylinder injecting the autoclave, rust around the perforations and the perforation hole; includes the step of installing the locking anchor in the perforations is, having a predetermined length body portion leading end side and having a fixed anchor which is provided so as to be fixed is inserted into the hole provided at the reinforced concrete wall or ceiling to the hole which the tip end side inserted into the go to the step of securely in the hole; And an anchor fixing nut having a through hole at the entrance to the perforation hole which is provided at an end side of the body portion is screwed to the outer peripheral surface of the body portion closed to the hole and communicates with the outside and the distal end of the threaded portion on the distal side the step of securely; includes, connecting a corrosion inhibitor injection cylinder through the connecting pipe at one end of the fixed anchor, the housing having a predetermined inner space and the inner space of the housing with rust preventive fill space and the acoustic space airtight compartment, and a piston moving in a longitudinal direction, and a corrosion inhibitor injection port communicating with the connection pipe for the rust preventive fill space, separate for dividing the acoustic space as a first and a second resilient space disk and the agent is filled in the first surface acoustic space the elastic ball and the second elastic area in the longitudinal direction comprising a resilient spring which is mounted so that the elastic force is expressed Filling the corrosion inhibitor in the corrosion inhibitor of the filling space input cylinder; And the step of connecting to the fixing anchor through the rust inhibitor is attached to a cylinder filled injection conduit; may include.