The utility model discloses an electromagnetic induction type thread tension measuring device, including magnetic circuit assembly, magnetic circuit assembly links to each other with the response subassembly, the response subassembly links to each other with the stator ring subassembly, magnetic circuit assembly includes U type magnetic circuit support frame, U type magnetic circuit support frame links to each other with supplementary magnetic arm, install the permanent magnet between U type magnetic circuit support frame and the supplementary magnetic arm, the response subassembly is including the response piece, cup joint the response piece of round trip movement in U type recess on the U type magnetic circuit support frame, the wired circle of the response outer cladding of piece, the response piece links to each other with induction rod, just induction rod has cup jointed the stator ring subassembly outward. An electromagnetic induction type thread tension measuring device, the measurement has that simple structure is reliable to thread tension, nos stress concentration, measurement accuracy height, response speed be fast to adopt electromagnetic induction type.