Underwood won the top prize Video of the Year for "See You Again" and also took the stage alongside another CMT Award-winner, Miranda Lambert, on the song "Somethin' Bad."
For her part, Lambert picked up the Female Video of the Year for the fifth time in a row with her song "Automatic."
Also during the night, The Band Perry picked up Group Video of the Year for "Done," while Luke Bryan and Lionel Richie earned the CMT Performance of the Year. Bryan also won the award for collaborative video of the year with Florida Georgia Line on the song "This Is How We Roll."
Furthermore, Lambert's husband Blake Shelton earned Male Video of the Year with "Doin' What She Likes."
Also, "The Voice" champion Cassadee Pope earned her first-ever buckle award from Shelton, her mentor on the television series.
Performances included Brantley Gilbert singing "Bottoms Up" while Shelton performed "Boys 'Round Here." Little Big Town took on their song "Day Drinking," Hunter Hayes performed "Tattoo," and Jason Derulo joined Luke Bryan performed a medley during the CMT Music Awards.
A full list of the 2014 CMT Award winner is below.
Video of the Year
Carrie Underwood, "See You Again"
Group Video of the Year
The Band Perry, "Done"
Breakthrough Video of the Year
Cassadee Pope, "Wasting All These Tears"
Male Video of the Year
Blake Shelton, "Doin' What She Likes"
Female Video of the Year
Miranda Lambert, "Automatic"
Duo Video of the Year
Florida Georgia Line, "Round Here"
Collaborative Video of the Year
Florida Georgia Line featuring Luke Bryan, "This Is How We Roll"
CMT Performance of the Year
Luke Bryan and Lionel Richie, "Oh No/All Night Long"