He was correspondent of Reuter and photojournalist in Pakistan. He was an intelligent and experienced journalist.
His father, Hajji Qurban Haidari, was the owner of a hotel in Afghanistan. Aziz had four brothers and two sisters. During the Soviet invasion, at the age of twelve, he fled with his parents to Pakistan while traveling and faced many problems and difficulties. They were looted by thieves during the trip. After the Immigration, they settled in the Hayatabad area of the city of Peshawar in Khyber Pakhtunkhawa. In Peshawar, he continued his study and entered an average private English school. His older brother Khalil Haidari, boxer and world champion, was arrested, tortured and killed by Pakistani security forces in Peshawar prison. Aziz finished his high school education and then entered Preston University in Peshawar. After completing his studies, he moved to Islamabad with his parents. He fell in love with a Pakistani girl, Saadia Sehar, a video journalist and school teacher. He married her on January 28, 1996 in Islamabad.
Aziz Ullah Haidari began his career as Deputy Director of Foreign Affairs of the Mehracollah Reconstruction Services (NGO) for Afghanistan in 1990. He started teaching English at a national English middle school academy in 1991. He started working as a journalist in 1987 with Pashto and Persian media. In 1990, he joined the news agency Reuters as a translator and monitoring news from Afghanistan. He was promoted as a Reuters correspondent in 1992.
He had a daughter, Aleena Haidari, and his son Muhammad Ammad Haidari.