The invention discloses a calling center system and a business processing method thereof. The calling center system comprises wide area network traffic management equipment, a first calling center anda different-place second calling center, wherein the first calling center is used for processing a calling request in a first area, and the second calling center is used for processing a calling request in a second area; and the wide area network traffic management equipment is used for connecting a calling party in an appointed area to a calling center in a corresponding area, and is also used for establishing communication connection between the calling party and the other different-place calling center when the calling center of the corresponding area has faults. By use of the system, whenthe whole machine room of the calling center has faults, business can be transferred to the different-place calling center to be processed, the different-place calling center also can simultaneouslyprovide service for the different-place calling party, so that calling center deployment cost is saved on a premise that business is guaranteed to be uninterrupted. By use of the scheme, management onmachine rooms of different areas can be realized, and the scheme is suitable for rack operation and maintenance.