In accordance with the Constitution of the Republic of Poland, the Sejm exercises control over actions taken by the Council of Ministers. This control may take various forms, depending on which body of the Sejm undertakes this task. This article describes the control mechanisms for the Sejm in pleno and the Sejm committees, which are one of the organs of this parliamentary chamber. The analysis covered such legal institutions as: vote of confidence, vote of approval, committees of inquiry, desiderata and opinion, as well as the institution of current information.