Venezuelan Foreign Minister Nicholas Maduro arrived in Tehran on Monday night, Press TV reported.
Maduro came to Tehran to work on the details of Iranian President Mahmoud Ahmadinejad's upcoming visit to Venezuela.
The Iranian president plans to make a tour of Latin America in the near future.
Venezuelan Basic Industries and Mining Minister Rodolfo Sanz and Science Minister Jesse Chacon are members of the high-level delegation accompanying the Venezuelan foreign minister.
The Venezuelan ambassador to Tehran told IRNA on Sunday that Iran and Venezuela are both targets of global hegemony, which means that both countries need to expand their cooperation.
Ambassador David N. Velasquez pointed out that Iran and Venezuela have signed 280 memoranda of understanding.
Eighty of the 280 MOUs have already been implemented, he added.