The invention discloses an intelligently controlled three-phase separator, and relates to the technical field of livestock excrement treatment. The intelligently controlled three-phase separator comprises a separator main body, wherein one end of the separator main body is provided with a liquid treatment object inlet and a solid treatment object inlet, and the other end of the separator main bodyis provided with a powder outlet and an air outlet; the liquid treatment object inlet is connected with a nozzle arranged in the separator main body, and the solid treatment object inlet is connectedwith a material conveying device and used for conveying a solid treatment object into the separator main body; and the separator main body is also provided with an air inlet. According to the intelligently controlled three-phase separator, moisture can be quickly separated, so that moist fixed particles can fully exchange heat with the hot air flow, can be disintegrated into powder after being dried, and can be used for organic fertilizers, thereby improving the treatment efficiency of livestock excrement.