Chalermdet made a name on the muay thai scence by winning his first 20 fights in major bangkok stadiums between 2002 and 2004 until he lost to Kwanjai Sit Phuphantung.
In his career he defeated notable champions such as Pettawee Sor Kittichai, Wuttidet Lukprabat, Nong-O Gaiyanghadao, Kaew Fairtex or Jomthong Chuwattana.
Following his retirement from the Bangkok circuit Chalermdet kept taking fights in parallel of his work as ranger in the Marine Division.
[5] On October 28, 2023, Chalermdet made his professional boxing debut, defeating Theepakorn Pankasem by unanimous decision.
[6] On December 12, 2023, Chalermdet made a return to muay thai rules when he defeated Xrisanthos Varfis by decision at the GOAT live Lumpinee event.