Rapid urban growth in cities, particularly in major cities occurs, wherever the urban mass be doubled, and city core size be stopped. That will lead to unbalanced relation between the center and the extended area of the city. The research problem is that the existing Sanaa main center has not coped with the changes of the city. The center has remained rigid and non functional nucleus, and unable to supply the demand of its arteries by blood, and from the other side its extremities could not feed it. The research aimed to answer a specific question: If the Tahrir square is still considered the main urban center of the transformed capital? If so, does it successfully feed its extended edges, or the need to a new center still recommended To answer the main question, the structural, analytical, methodology has bee chosen and the result was; that if the city has been widely developed, it will be necessary to promote its old center and support it by creation a new center in an appropriate central location, in addition to strengthen the existing sub-centers as well.