The invention provides a thread type lead-out device of a transformer bushing end screen signal. The thread type lead-out device which is used for leading out leakage current from an end screen leading wire post of a capacitive type bushing end screen comprises an outer joint sleeved on an interface of the capacitive type bushing end screen through a mounting hole, a protective sleeve connected with the outer joint and provided with a leading wire hole, a conducting rod connected to the protective sleeve through an elastic insulating member, and a converting thimble detachably connected with the conducting rod and provided with a threaded hole matching with the end screen leading wire post by a screw thread. According to the embodiment, converting thimbles with the threaded holes in different sizes can be selected based on different sizes of the end screen leading wire posts; that is, the matching with different end screen leading wire post can be realized only by a step of replacing the converting thimble. Therefore, the thread type lead-out device of the transformer bushing end screen signal, disclosed by the invention, avoids a problem of the replacement of the conducting rod and reduces labor intensity.