The defender received the trophy at the club’s training complex having been announced as the winner last month for his outstanding performances during 2019-20.
Alexander-Arnold figured in all 38 games as Liverpool roared their way to the Premier League title and ended a 30-year wait to be crowned domestic champions.
He also set a new landmark for number of assists by a defender in the competition, beating his own record, as he laid on 13 goals for teammates.
The 21-year-old was named as the PFA Young Player of the Year earlier this week.