Christchurch Police have helped a mother duck and her ducklings cross a busy intersection near Christchurch Hospital.

Video footage uploaded to the Canterbury Police Facebook page show police officers following the ducklings as they cross the road, making sure they don't get hurt or run over.

Detective Sergeant Mike Freeman said he and two other officers were returning to Christchurch Central Police station from a meeting near Christchurch Hospital at about noon on Monday when the rescue took place, Fairfax reported.

"The intersections were busy so in order to avoid the duck and ducklings getting hurt and prevent any road related incidents caused by drivers trying to avoid them the officers took action to stop the cars and ensure they reached their watering hole safely," he said.