The minor district (king amphoe) Song Dao was created on 1 April 1972, when the three tambons Song Dao, Watthana, and Tha Sila were split off from Sawang Daen Din district.
On April 1, 1972, the minor district (king amphoe) Song Dao was formed by splitting off the tambons Song Dao, Watthana, and Tha Sila from the Sawang Daen Din district.