Sejm committees are internal, collegiate bodies of the Sejm, the establishment of which is required by the Basic Law. The regulations in force, which set the number of standing parliamentary committees (29), allow to state that we are currently dealing with a complex structure. Standing committees are formed to consider and prepare cases which are the subject of the Sejm’s work, to express opinions in laws delegated to the Sejm, the Marshal of the Sejm or the Presidium of the Sejm, as well as to perform control tasks. The spheres of activity of Sejm committees are analyzed in the broader context of legislative, control or creative functions.