On Thursday morning (CET), the Danes lost their Round of 16 match to Po-Hsuan Yang and Ling Fang Hu from Taiwan in three sets 13-21, 21-9, 14-21.
This means one of Denmark's major medal hopes at the Badminton World Championships is out of the tournament.
"We are hugely disappointed by this. We had dreamed of a medal and believed it was achievable," Alexandra Bøje told TV 2 Sport.
"I am disappointed and frustrated that we couldn't do more about it," said Mathias Christiansen.