The invention provides a continuous alternating MBBR sewage treatment method and equipment. The treatment method comprises the following steps: suspended granular impurities in sewage are removed by pretreatment, quality and quantity equilibrium treatment is performed on the sewage, then anaerobic phosphorus release and synchronous denitrification and nitrification treatment are performed on the sewage by adopting anaerobic/anoxic/aerobic alternating operation, and pollutant matrix removal efficiency is improved. The treatment equipment comprises a homogenization chamber, a facultative chamber, a transition chamber, a pre-denitrification chamber, an aerobic tank, an efficient sedimentation tank and an equipment control chamber which are communicated through a water pipeline, wherein ultraviolet disinfection equipment, a pipeline booster pump, a full-automatic filtering tank, an aeration fan and a PLC control device are arranged in the equipment control chamber. The treatment equipmentis high in integration degree and functionality and simple and convenient to mount and operate, occupies small area and has high space utilization rate, long-term operation stability of the equipmentis enhanced, and treatment energy consumption and operation and maintenance cost of the whole sewage treatment equipment are reduced.