In the near future, the Large Hadron Collider (LHC) will provide us some hints about physics beyond the Standard Model. My current research focuses mainly on exploring the collider phenomenology of new physics and on studying how to distinguish different models at the LHC. In addition to the LHC, cosmology measurements recently have given us direct evidence for new physics, such as dark matter and baryon asymmetry. Therefore, I am also very interested in examining the interplay between LHC phenomenology and cosmology.