We investigate the possibility of the identification of TeV physics models including WIMP dark matter at the International Linear Collider. Many TeV physics models contain a WIMP dark matter (χ°) and charged new particle (χ±) which interacts with the WIMP dark matter via the vertex χ± χ°W+. Through Monte Carlo simulations, we study the process, e+e- → x+X- → χ°χ°W+W-, because the signal contains the fruitful information of the model. We show that, in particular, the distribution of the X± production angle is the powerful probe in the TeV physics model search.