Abstract: A new type of shear thickening inter phase spacer with adaptive variable damping performance is proposed based on the unique rheological properties of shear thickening fluid (STF) for semi-active control of inter phase spacers. Firstly, the STF materials were prepared and their rheological properties were tested; Subsequently, based on the power-law model, the constitutive equations of four STF materials were fitted; Secondly, a new type of double rod gap type STF damping spacer was designed, and based on the theory of nonlinear fluid mechanics, a nonlinear dynamic model of STF inter phase spacer was established; On this basis, by building an STF inter phase spacer experimental platform, the dynamic characteristics of inter phase spacers loaded with 2 different liquids (including STF and ordinary suspensions) were tested; Finally, a fluid structure coupling micro wind disturbance numerical simulation model was established for the STF inter phase spacer, and the anti micro wind vibration effect of this type of spacer was studied. The research results indicate that the spacer designed based on STF material has the ability to adaptively change its damping characteristics significantly according to the vibration state without the need for any external energy input. This allows the wire to move away from the "locked" range during gentle wind vibration, effectively reducing the probability of the wire experiencing gentle wind vibration.