Real Madrid reveal Higuain ahead of schedule
Higuain has been sidelined since November due to a herniated disc, for which he went under the knife in the United States in January.
A statement on the club's website said: "The striker worked out on the pitch today for the first time since his surgery and did ball work.
"Higuain will be subjected to diagnostic tests in the coming weeks prior to starting the stage in which he will gradually rejoin the squad."
The doctor who performed the surgery, Dr Richard Fessler, said at the time the 23-year-old Argentina international was likely to be sidelined for up to four months and would not be 100% recovered for a year.