In a press conference headed by the national director Dra. Siri kan Ongsongkan, Miss Earth Thailand 2021 was officially started as the finale details and schedule of events and activities were announced.

The national director announced that the finals will be held on 8th August 2021 at DC Hall where Miss Earth Thailand 2020 Teeyapar Sretsirisuvarna will crown her successor at the end of the event finale. The official schedule of activities and events was also announced which will be as follows –

8th June 2021 – Press Conference

8th – 30th June 2021 – Application

1st July 2021 – First Selection Announcement

8th July 2021 – Audition

10th July 2021 – Announce 30 Finalists

17th July 2021 – Orientation

18th – 19th July 2021 – Photoshoot And Vtr

21st-23rd July 2021 – Training

24th July 2021 – Preview

25th-31st July 2021 – Activities

1st-3rd August 2021 – Rehearsal

4th August 2021 – Deep Interview

6th August 2021 – Preliminary Competition

8th August 2021 – Grand Finals

Last year, Miss Earth held its first ever virtual show where Miss Earth Thailand 2020 Teeyapar Sretsirisuvarna represented her country at Miss Earth 2020 and placed in the Top 20 with her stellar performance. Thailand is yet to pioneer its win at Miss Earth.