The Su-7B was the first mass-produced variant of the Su-7. After the introduction of the Su-7, the fighter was reclassified as a fighter/bomber and the production was changed to the Su-7B. This strike aircraft was meant to fill the role of a fast fighter/bomber in the new Soviet Air Force doctrine of lightning strikes deep in enemy territory against NATO. The Su-7 was later improved and replaced by more newer variants, such as the Su-7BM and the Su-7BKL which was the most produced variant.

Introduced in Update "Starfighters", the Su-7B is a very capable fighter/bomber. Unlike many supersonic aircraft at its BR, the Su-7B has a very good acceleration and outspeeds almost any other supersonic fighter except for the MiG-21s and the F-104 Starfighters. For a strike aircraft it has a decent manoeuvrability, this allows it to fight aircraft like the MiG-21s and Harriers but without losing too much energy. However the Su-7B excels in terms of ground ordnance, even though it lacks any sort of guided munitions, it has ballistics computers for both bombs and rockets. It has enough payload to destroy a full base with the ZB-360 incendiary bombs and for ground RB it can use the S-24 or S-5K rockets.