The strategic location of Sidi Bel Abbes, its climate, its topography and its water sources have made it a land of foreign invasions and the emigration of many people to it. The idea that irrigation is regulated and the settlers Romans in their wars reached the mountains of Tessala, after their devastating crossing, they took the region as a military refuge. The characteristics of this occupation are still present in Ain Bint Al Sultan and others. At the end of the 5th century, the indigenous population suffered from Byzantine domination which encountered constant rebellion, discontent and bloody revolutions were distinguished.
Discontent and bloody revolutions characterized this period until the emergence of Islamic conquests at the end of the 7th century and welcomed by the Berber tribes, attracted by the message of equality in Islam, and the region subsequently experienced and in the 11th century, major population movements, with the growing influence of the Bani Hilal tribe, then the emergence of the Almoravid dynasty, which launched a great movement for the unification of the Maghreb. Then this dynasty was overthrown by the Almoahidin in the 12th century, and in the 13th century the Maghreb country was divided into three kingdoms, each dependent on a reigning family, and thus the region of Sidi Bel Abbas passed under the domination of the Zayanites, under the reign of its founder Ighmrasin bin Zayan, who was able to unite the Hilal tribes and, like most parts of the country.