It all looked good for Raith untll Craig Malcolm fired them into a 14th minute lead - the Kirkcaldy side's first goal in five matches.
But County hit back after the break scoring no fewer than four times as ragged Rovers fell apart. The comeback started in the 53rd minute when Don Cowie lashed the ball past Raith keeper Rudy Pounoussamy with an 18-yard shot.
Within seven minutes the visitors were ahead as Jim Lauchlan collected a corner kick at the back post and drilled the ball into the net.
It got even better for Ross County when substitute David Winters rounded Pounoussamy before scoring the third.
Rovers' misery was complete 12 minutes from the end when Alex Burke beat the offside track to net the fourth.