Chief Secretary A.K. Sinha has given the go ahead for the dismissal of the 70, an official in the Chief Minister's Office said.
Official sources told IANS that most officers facing the sack were caught red-handed, while accepting bribes.
The process to dismiss them was initiated after departmental proceedings proved the charges against the officials.
Nearly 10 days ago, Chief Minister Nitish Kumar demanded that inquiries against corrupt officers should be expedited and they should be dismissed from service within two months, if found guilty.
In the last two days, the Economic Offences Unit of Bihar Police raided two corrupt officers in Patna and detected assets worth crores of rupees with them.