Raz B -- Off Life Support, Smiling and Responsive

R&B singer Raz B is out of his coma and in stable condition, TMZ has learned.

Sources close to Raz tell TMZ ... the former B2K member came out of his life-threatening coma Sunday at a hospital in China. We're told he is stable, breathing on his own, smiling and responsive ... but has not yet been released from the hospital. He's staying a few more days to be monitored.

TMZ broke the story ... Raz was smashed in the face with a bottle Thursday while performing at a club in China. He was rushed to the hospital where he underwent minor surgery.

But the next day, when Raz didn't wake up his back-up dancer rushed him to the hospital again. It was determined he was in a coma and was placed on life support.

A rep for Raz B tells TMZ ... Doctors say it's a miracle that he survived.