Animal control officers said they were called out to the home at 4050 La Salle Ave. in St. Cloud after the child was bitten just after 7 p.m. Saturday.
Officials said the bite wounds were so severe, the child had to be airlifted to Arnold Palmer Hospital for treatment.
Officials did not know if the bite happened at that location or not.
There's no word on the child's condition at this time.
It was also unknown if there were any prior calls about the pit bull.
Officials said the pit bull has been quarantined at Osceola County Animal Control.
Osceola County officials are investigating after a 4-year-old was severely injured by a pit bull.