The second period of the Macedonians Dynasty starting with the death of Basil II (1025) is not as successful as the first period. During this period which lasted for thirty years, seven different individuals had a chance to govern the state. The absence of long-running governance causes failure in stabilization. The empire has a rather difficult period as adverse events in the economy are added to domestic and foreign problems. The second period, starting with a solid regime of Constantine VII, continues with a process that Romanos III pursues a far from reality and sensational policy. Romanos III takes part in Byzantine history with failures in the military and costly works putting a big burden on the treasure. Ioannes, brother of the emperor, takes almost entire reign, particularly financial issues in hand in Michael IV's reign. In this period, even though some achievements are attained, heavy tax policies and state treasure, which Ioannes dedicated to his family, are reflections of the understanding that the state falls behind family interests. One of the reasons for military failure again in that period is bringing unable people to the army, just because they are family members. The short reign of Michael IV, Empresses Theodore and Zoe's costly politics and their insufficiency in governorship and Constantine IX's being fond of earthly pleasures rather than the state problems are among the marks indicating how unsuccessfullythe period is governed. Byzantine Empire is a great civilization that left a mark in history. Byzantine, which managed to survive for centuries, is also an important point in Turkish history. We have acted with the awareness that a single study that could take such a great civilization in all its aspects is not possible, and we limited our work in this direction. Thus, we set our subject as the political and economic developments that took place in the Second Period of the Macedonian Dynasty, which was a period when Byzantium rapidly lost power. In our study, we especially benefited from the Byzantine chronicles of the period and many studies and articles written on the subject. We hope that our work will contribute to new studies in this field. [ABSTRACT FROM AUTHOR]