Prime Minister Prayut Chan-o-cha led his 18 new ministers to have an audience with His Majesty the King and to take their oaths of allegiance before the King at Amphorn Sathan Villa in Dusit Palace.
Also granted an audience by the King were General Vilas Arunsri, the secretary-general of the prime minister, and Mr Thirapong Wongsivavilas, the secretary-general of the cabinet.
HM the King told the cabinet that in working it was normal to have problems and mistakes, but these can be overcome if they use wisdom and are determined.
The King said that the cabinet is duty-bound to steer the country forward, defend the country and take care of the people and to attach importance to national security.
He also suggested the cabinet to follow the advice and wishes of the late King Bhumibol Adulyadej.
The new cabinet line-up got royal endorsement on Nov 23.