The league was operated by the Polish Football Association (PZPN).

The league season began in July 1990, the last matches were played in June 1991.

It was the last edition of the I liga before the competition reform, after which two groups of this level were restored.

[3] Stal Stalowa Wola won the championship for the first time in their history.

The order of the teams according to the place taken at the end of the season.