North Korea's state television has aired a series of documentaries of leader Kim Jong-un soon after his inspection trips, in an apparent move to help the young leader gain public support.

Korean Central Television broadcast films on Kim on Saturday, just two days after he toured an amusement park, an ice rink and a street in Pyongyang.

The state television aired the new documentaries three times on Saturday in a move apparently designed to show the public Kim's face more frequently.

On Sunday, the television station also aired a documentary on Kim just after he inspected a zoo in Pyongyang.

The rare move represents a dramatic change to the state television, which used to make a documentary of Kim's father, long-time leader Kim Jong-il, about a month after the senior Kim's inspection trips.

The move also suggests that the North has been mobilizing the state propaganda machine to give the public more coverage of its new leader Kim Jong-un and help him consolidate his power.

Kim has made frequent inspection trips across the country in an apparent attempt to bolster his support from the public since he took over the country following the December death of his father. (Yonhap News)