The division-champion was promoted to the 2020–21 Danish Superliga. The teams in 10th, 11th and 12th places were relegated to the 2020–21 Danish 2nd Divisions. The reason for this change in promotion and relegation spots was that the Danish Superliga was reduced to 12 teams following this season.[1]
FC Helsingør and Thisted FC were relegated to the 2019–20 Danish 2nd Divisions. FC Helsingør was relegated for the second season in row following their relegation from the Danish Superliga while Thisted FC lasted two seasons in the league. Skive IK and Kolding IF won promotion from the 2018–19 Danish 2nd Divisions. Skive will play at the 1st Division won promotion after only one season's absence, where as Kolding won promotion for the first time since 2010–11 season, when the club was part of Kolding FC.