The invention discloses a tooling replacement device for a steel wire rope poppethead. The tooling replacement device comprises a support for preventing a pulley from dropping, a bracket mounted on one end face of the support, and a guide bracket for supporting a replaced shaft; a screw hole for mounting the bracket is formed in one end face of a mounting bracket of the support; an inner lateral surface at the other end extends out of a baffle plate with a semicircular hole in a vertically downwards manner; the bracket comprises a connecting part for connecting the support, a bracket main body, an air cylinder sleeve and a shield; the internal part of the bracket main body is a cavity. The tooling replacement device does not need to adopt a sling to fix the pulley any longer, and a new poppethead is mounted on the pulley when an old poppethead is dismantled, so that the replacement technology of the poppethead is changed to facilitate operation, the replacement difficulty of the poppethead is reduced, time is greatly saved, the working efficiency is improved, and the manual and production cost is reduced.