Ambassador Hyon Hak Bong said Tuesday that Pyongyang views Trump's offer as an electoral ploy that isn't significant.
Hyon said that "we see it as the dramatics of a popular actor," adding that US presidential candidates say a lot of things during a campaign but once they assume power they always adopt a hostile stance toward North Korea.
Trump said last week he is open to meeting with Kim Jong Un, which would represent a sharp alteration in US policy.