The unnamed boy, from Wenzhou, Zhejiang Province, was operated on for two hours after doctors failed to remove the magnets, known as Buckyballs, individually
The child, from Wenzhou, Zhejiang Province, had two-hour long surgery after the magnets got stuck in his bladder.
The magnets, also known as Buckyballs, caused the boy severe pain as he endured bleeding and swelling.
Dr Wang Yongbiao, who removed the balls, told Kankanews: "The balls are now aligned into two columns and got stuck in the posterior urethra area.
"Children can easily swallow or place the magnet balls into their body parts due to the small size.
"I had previously dealt with two similar cases in relating to the magnet balls."
Initially, the doctor tried to remove each magnet individually using forceps, but the balls had gathered together and would not move.
Dr Wang failed to take the magnets out individually using foreceps and warned against letting children play with the balls
The magnets, also known as Buckyballs, caused the boy severe pain as he endured bleeding and swelling
When he failed to take the balls out individually, Dr Wang operated on the boy for two hours.
He warned against using the balls, saying their size makes them very dangerous for children, who can swallow the tiny magnets.