Ali ibn Muhammad Abu Hayyârı al-Tawhidi (320-414/932-1023) was an Arabic litterateur and philosopher, and author of numerous books which reflect all the main themes of debate and reflection in the cultivated circles of his time. His basic themes are God, Man, Intellect, Soul and Nature. He also has a strong interest in moral questions on both the individual and social level. He was a ‘Farabian School’ and ‘Sicistanian School’s student. Tawhidi inquired “the problem of life” in his essay which is named “Risâletü’l Hayât” (The Treatise on the Life) and his other Works. I studied and analyzed the “Tawhidi’s Philosophy of Life” according his thoughts in this article. He writes and classifies “the life” in his treatise as ten types. The eight types are about the man. The one of them is about the angels and the other is about God