The seventh extension will become effective from Friday at 1.00 a.m. (2200GMT Thursday).
The ruling Justice and Development (AK) Party and the opposition Nationalist Movement Party (MHP) backed the motion, while the main opposition Republican People's Party (CHP) and People's Democratic Party (HDP) opposed it.
According to the constitution, a state of emergency can be declared for a maximum period of six months.
To enact the state of emergency, the government must foresee serious indications of widespread violence which may interfere with the democratic environment or basic constitutional rights and freedom of its citizens.
Turkey declared a state of emergency for the first time on July 20, 2016 following a deadly coup attempt by Fetullah Terrorist Organization (FETO).
FETO and its U.S.-based leader Fetullah Gulen orchestrated the defeated coup of July 15, 2016, which left 250 people martyred and nearly 2,200 injured.
Ankara accuses FETO of being behind a long-running campaign to overthrow the state through the infiltration of Turkish institutions, particularly the military, police, and judiciary.
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