Lu Kang made the remarks when asked to comment on the DPRK firing of what the Republic of Korea's military assessed as a Rodong ballistic missile on Friday morning.
The UN Security Council resolutions have clear provisions relating to the DPRK's ballistic missile launch, Lu said at a regular news briefing.
The Security Council adopted a resolution earlier this month to curb the DPRK's nuclear and missile program following its nuclear test and satellite launch.