The objective of the study is to present how the institution of aggregate sentencing evolved in Polish criminal codifications – starting from the first 1928 Code of Criminal Procedure through the new codification of the 1969 Criminal Procedure Act and ending up with the codification of the 1997 Code of Criminal Procedure and its subsequent amendments. The aim of the analysis is not to reproduce the content of the legal standards applicable in the above-mentioned codifications in the context of the provisions regulating the procedure for passing an aggregate sentence but to show how the views of the doctrine and judicature evolved with respect to the interpretation problems that arose at the theoretical and practical level. The presentation of the changes that took place over the decades will enable a better understanding of the genesis of the provisions regarding aggregate sentencing in the context of its almost 100-year existence in the Polish penal codifications.