For　classical　random　walks,　changing　or　not　changing　coins　makes　a　trivial　influence　on　the　random-walk　behaviors.　In　this　paper,　we　investigate　the　quantum　walk　where　a　walker＇s　movement　is　controlled　by　two　initially　independent　coins　alternately　partially　or　fully　after　each　step.　We　observe　that　there　exist　complicated　inter-coin　correlations　in　the　quantum　walk.　Specifically,　we　study　the　correlations　of　two　coins　by　tracing　out　the　walker,　and　analyze　classical,　general,　and　quantum　correlations　between　two　coins　in　terms　of　classical　mutual　information,　quantum　mutual　information,　and　measurement-induced　disturbance.　Our　analysis　shows　different　quantum　features　from　that　in　classical　random　walks.