Mick, 19, was triumphant after passing team-mate Marcus Armstrong and rival Robert Schvartzman in wet conditions on the demanding circuit 7,000km circuit in the Belgian Ardenne on Sunday.
His victory comes in the junior category on the same circuit so loved by his legendary father, who also made his Formula 1 debut there and claimed the first of his 91 Grand Prix victories in a Benetton racing car.
Last year, Mick marked the 25th anniversary of his father’s first Formula One win at Spa before the Grand Prix when he drove demonstration laps in a 1994 Benetton car.
After today’s race, the emotional and clearly delighted German rookie said: “As it seems, Spa is a good venue for the Schumacher family.
Michael Schumacher won six times at Spa in 1992, 1995, 1996, 1997, 2001 and 2002 – more than any other driver – and went on to claim seven World Drivers Championships – two with Benetton and five with Ferrari.
He retired in 2006 and made a comeback in 2010 with Mercedes but was unable to replicate his earlier success.
Last week, former Ferrari boss Luca Cordero di Montezemolo revealed that Schumacher tried to come back to racing in 2009 after a driver dropped out but was stopped by his doctor after suffering severe injuries in a motorcycle accident.
On December 29, 2013, the sporting legend suffered a severe traumatic brain injury after falling and hitting his head on a rock while skiing at the exclusive Meribel resort in the French Alps – despite wearing a helmet.
He was placed into a medically induced coma before undergoing two life-saving operations at Grenoble Hospital.
In April 2014, he was withdrawn from the coma and moved to a hospital in Lausanne, a city on Lake Geneva in Switzerland, before being brought home in September of that year.
But Schumacher’s millions of fans from around the world have been wondering what his current condition is, with official updates from his family few and far between.
In November, his wife Corinna Betsch told the press: “The decision to protect his privacy from the public has been taken in Michael’s interest.
“We have made it very clear that something serious has happened.”
Mick, along with his 47-year-old mother Corinna and 21-year-old sister Gina Marie, have also rarely discussed his condition.
But his manager Sabine Kehm insisted they were grateful for all the support.
She said: “What can be said is that the family really appreciates the empathy of the fans.
“The people really do see and understand (his health situation) is not to be shared in the public eye.”