Letters by prisoners will no longer be censored in most jails under new proposals to relax rules at penal institutions.
Inmates will also be allowed to write unlimited letters and correspond for the first time with legislators and outside organisations.
But the controversial ban on racing pages, introduced to curb gambling among prisoners, will not be lifted.
Hong Kong's 12,341 inmates are presently limited to one letter a week and outgoing and incoming mail is vetted.
They are only allowed to write to friends or relatives and must not discuss the prison, life inside, inmates or sex.
Prisoner rights campaigners welcomed the move to bring Prison Rules in line with the Bill of Rights.
But they were disappointed the Government would not boost visits by family and friends - limited to two a month.
