This research focuses on the relationship between exchange rates, openness and economic growth in the DRC. Its objectives are to identify the influence of the exchange rate on external openness and that of openness on economic growth in the DRC over the period 1990 to 2020. The econometric method made possible by the documentary technique and the VAR model enabled us to achieve these objectives. In short, the analyses show that the exchange rate policy applied in the DRC to increase openness is not effective, and the openness policy used in the DRC to increase economic growth is not effective over the entire period under study.