Syko Stu — the wrestler who was beaten badly by Raja Jackson last weekend — is heading home after several days in the hospital … according to a message posted to his Facebook.

The message — posted to the account by himself and his wife Contessa Patterson — states Stu’s heading home … after sustaining a serious head injury during the brawl.

According to the post, Stu has trauma to both his upper and lower jaws, a laceration on the upper lip and a fracture to maxilla bone. He lost several teeth during the onslaught.

Stu and Contessa say they’re grateful for all the love and support … adding the kindness means more than they can express in words.

We broke the story … the Los Angeles Police Department has launched an investigation into Raja — son of MMA legend Quinton “Rampage” Jackson — after he jumped into the ring at a wrestling event, threw Stu down and started beating him badly.

The whole incident was caught on video … and, it only ended when fellow wrestler Douglas Malo jumped in to fight him off.

Malo told us earlier this week that Stu was doing better … and was even communicating after the beatdown.