Behrouz Kamalvandi made the remarks among reporters on Saturday.
Pointing to Iran-IAEA deal, Kamalvandi said the important issue in the agreement was the "timetable", which is the major character of the agreement to resolve the outstanding issues from the past 13 years at once.
Stressing the secrecy of talks between Iran and IAEA, Kamalvandi praised IAEA director-general Amano for refusing to reveal the context of the agreement in the US congress in spite of intensive pressures.
However, he complained that the agency acted politically in composing the reports about Iran. "When the agency explains unnecessary details of Iran's nuclear activities, its goal is to suggest certain issues for those concerned, and Iran has noticed such approach several times," Kamalvandi said.
He added that Iran is encouraging the agency to benefit from the post-deal political atmosphere and apply an impartial approach politically and use technical and legal terminology with less political motivations.
He underlined that Iran is not worried about the upcoming report of the agency, but demands the IAEA to revise literature of its latest report.