Thonburi City was established in 2014 as a 'pilot club' to replace Laem Chabang F.C., which was ended at the last place of the previous season of Bangkok and field region.

'King Cobra' used Thonburi Stadium as its temporary home ground due to 84th Birthday Anniversary of His Majesty the King Sport Club was still under maintenance.

King Cobra ended their first season with the 8th place of the region with 33 points, edged the ninth-placed Krung Thonburi F.C.

In 2015, King Cobra got its first achievement as it won the second place of the Central & Western Region and qualified to the Champions League Group stage.

Then, King Cobra made their bad performance till they ended up at the last place of Western region and relegated to Thai Football Division 3 next season.