The withdrawal of the blue helmets from Butembo is temporary and the personnel will be relocated outside the city, the UN Stabilization Mission in the DRC (Monusco) said on Twitter.
The statement added that Monusco will resume its activities in the city as soon as the minimum conditions are met to work in collaboration with the authorities and the local population.
Violent uprisings broke out last July due to the ineffectiveness of UN troops in containing the insurgents of the March 23 Movement or M23, made up of members of the Rwandan Tutsi ethnic group.
The protests left 33 people dead, including civilians and four blue helmets, according to official figures.
The east of the DRC has been plunged since 1998 in a conflict fueled by rebel militias, despite the presence of the Monusco, which has some 14,000 troops.