A method and equipment for separating multi-phase media has an expansion cyclone starter and two centrifugal separation segments fixed together by sealing ring and flanges and then installed to supporting frame. A perforated plate between the upper opening and top cover of said cyclone starter has a central hole and small holes around the central hole. A guide plate is vertically fixed under the perforated plate by means of said small hole. In centrifugal separating segment there is separating cavity. A gravitational separating cavity is outside above-said separating cavity. Its advantages include compact structure, high separation effect, no need of power.