The present invention relates to bifunctional compounds that induce HMG-CoA reductase degradation, in which in which atorvastatin and E3 ubiquitin ligase binding moiety are chemically linked. The present invention also relates to a preparation method of the compounds, a method for degrading HMG-CoA reductase using the compounds, and a composition for the prevention or treatment of HMG-CoA reductase-related diseases comprising the compounds.