An arrest report from the Starkville Police Department says Dixon was charged with driving under the influence of alcohol after officers found him intoxicated late Saturday night with two empty champagne bottles on the floorboard of his car.
Mississippi State spokesman Joe Galbraith says coach Dan Mullen is still trying to gather facts before deciding on disciplinary action and won't comment yet.
The 21-year-old from Terry was recently named preseason second-team All-Southeastern Conference and is the Bulldogs' best returning offensive player.
He rushed for 869 yards and seven touchdowns to bring his career totals to 2,603 yards and a Mississippi State record 30 touchdowns.
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