Glenfield Children's Heart Unit in Leicester, used by families across the East Midlands, is going to stay open.
NHS England carried out a review because there were concerned not enough operations were being carried out there.
It's used by families across the East Midlands and its closure would have meant much longer journey times for local families.
It would have meant journeys to Birmingham or London for families with very ill children.
The proposed closure sparked a huge campaign against the plans, but NHS England have now agreed to keep it open as long as the hospital try to increase the number of operations being done between now and 2021.
John Adler, Chief Executive at Leicester’s Hospitals, said: “We are obviously delighted with the decision to continue commissioning EMCHC as a Level 1 congenital heart disease centre."
"The decision is a vote of confidence for our staff and service, and is great news for our NHS partners across the East Midlands network."
"The future is now in our hands and this decision means that the clinical team can now focus on building a world class congenital heart service for people across the East Midlands and beyond."