Hossein Mahjoubi is known as the "painter of paradise". He is the painter of imaginary landscapes and he represents the memory of his birthplace, Gilan in visual poems. Mahjoubi loves nature and has used this fondness in the design of parks and green spaces.

The artist turned to painting as a teenager. In 1950, he went to Alborz High School in Tehran and then entered the Faculty of Fine Arts in Tehran University of Art and took architecture courses simultaneously. During his student years, he won the first prize in the group exhibition of the Iran-US Association, and graduated in 1959.

Mahjoubi made his solo exhibition a year before graduating from the Mehregan Club in Tehran. The artist has had more than 90 solo exhibitions so far and has showcased his works in numerous group exhibitions at home and abroad. He also designed Saei Park and the construction of green spaces of Azadi Stadium, the International Exhibition, and several parks in Tehran has occurred under his supervision. Mahjoubi was selected for the Hans Christian Andersen International Prize in 1978 for his illustration of the book “The Legend of Rain”. In 2020, the street leading to the house of this artist in Tehran was named after Professor Hossein Mahjoubi.

Mahjoubi represents nature in his works. The Trees and nature in his paintings have a lyrical and symbolic quality. Ruyin Pakbaz writes about his works: "After a period of experience in painting in different styles and subjects, since the early 1960s, he has turned to imaginary landscape painting. Over and over again, he has depicted rows of tall, slender trees, white horses wandering in the hills, foggy pottery roofs, and fading mountains on the far horizon. "His landscapes with cold thin colors - ranging from green and blue to purple, often evoke a romantic and imaginative mood." In his own speeches, he has constantly spoken of the sanctity of nature and the dignity of the earth as the mother of all creatures. Amir Soghrati, an art critic, writes about Mahjoubi: "Hossein Mahjoubi is one of the most beloved and mystical artists and one of the most important modernist painters in Iran, who has been painting nature for the past 70 years. His image can be found in his paintings; Eye-catching, calm and pleasant paintings, with original and beautiful images of his homeland, "Gilan with tall trees and houses with sparganium-covered roofs and white horses."