South Africa's ex-Paralympic runner Oscar Pistorius will be banned from drinking alcohol and talking to the press when he is released on parole on Friday, prison authorities have said.

He is leaving prison almost 11 years after he shot dead his girlfriend, model Reeva Steenkamp.

Pistorius, 37, killed Miss Steenkamp, a model, in the early hours of Valentine's Day 2013, firing four times through the bathroom door of his ultra-secure Pretoria house.

A parole board reviewing whether Pistorius was fit for social reintegration decided at the end of November to allow him out of prison early on January 5.

'Just like other parolees, Pistorius is restricted from conducting media interviews,' the department of correctional services said in a statement.