Since 1982, the Berggorilla & Regenwald Direkthilfe has been dedicated to the conservation of gorillas, especially the mountain gorillas, and their habitats. They focus their work on the eastern gorillas by supporting projects contributing to the conservation of these animals. Occasionally they also support projects for the conservation of certain populations of western gorillas that are particularly at risk. In addition, they support research activities of (predominantly local) scientists. Finally, they provide necessary equipment to support the important work of the rangers.

Another important goal of their organisation is raising the general public's awareness of the problems of gorilla conservation and the changing situation in habitat countries through their magazine Gorilla Journal, which was published for the first time in 1992. It is printed twice a year in German and English (presently also in French). Their work is financed by donations and members' contributions. They are recognized as a non-profit organisation in Germany.