The invention discloses a cycle sequencing batch operation sewage treatment plant and technology The core of the invention is that a plurality of SBR pools are arranged in a circle; and the central pool combines functions of water quality and quantity regulation, water distribution, sludge backflow, mixed liquor backflow and biological selection. An individual SBR pool performs different functions in the cycle operation. The sewage treatment plant provided by the invention can be operated in a conventional SBR, or in combination of a plurality of SBR pools. By control of parameters including water inlet, sludge backflow, mixed liquor backflow and dissolved oxygen, the technology can achieve operation of a plurality of processes including A/O, A2/O, inverted A2/O, VIP, CASS and Bardenpho, and reach good simultaneous treatment effects on various water quality and quantity and carbon, nitrogen and phosphorus pollutants in refractory industrial wastewater. The sewage treatment plant has compact structure and a small land occupation; and the technology of the invention has the advantages of low investment, low operation cost and easy operation and maintenance.