Human being who many-sided has been in a struggle for knowing and understanding himself since he took part in the possible existence scene. Both that revelation started with the first man and the knowledge about self (nefs) has been inherited from generation to generation are an evidence for it. When psychology is talked about, a modern science gaining acceleration in the 1960s comes to mind. The connection of this field with Islam tradition, especially with the Works in the Ottoman period, hasn’t been thought much. In this study the aim of removing the concerning insufficency the psychology works for “ilmün’nnefs” in the late period of the Ottoman will be attributed first and then İsmail Hakkı İzmirli will be talked about shorty. Afterwards, “ilmün’n-nefs” by İzmirli will be introduced and “İlmü’n-Nefsin Tarihi/The History of “İlmü’n-Nefsi”, the last capter of the book, will be transfered by latinizing