The invention relates to a process and equipment for purifying flue gas in dry type for a biomass electric power plant, which are used for separating gases and impurities in the flue gas generated by biomass under a high-temperature anhydrous state. The equipment is characterized in that an air outlet of a first cyclone separating device is connected with an air inlet of a second cyclone separating device through a pipeline; lower ends of the first cyclone separating device and the second cyclone separating device are provided with a feed opening respectively; the feed opening is provided with an ash discharge device; an air outlet of the second cyclone separating device is connected with an inlet of a dry heat exchanger through a pipeline; an outlet of the dry heat exchanger is connected with an inlet of an electrofilter through a pipeline; and an outlet of the electrofilter is connected with an inlet of a gas cushion through a pipeline. The process and the equipment have the advantages of effectively separating gas and solid particulates in the flue gas, not polluting the ambient environment without water and other auxiliary materials in a cooling process, adapting to various severe working environments, improving the adaptability of the whole process and equipment and the like.