The utility model belongs to the field of automatic logistics storage, and relates to an automatic detector for intelligent labels. In the automatic detector, a carrier is input to a cabinet, and label information is read after the cabinet is automatically closed. The automatic detector comprises the cabinet, an RF reader and a conveyer, wherein the RF reader and the conveyer are mounted in the cabinet. Front and rear side plates of the cabinet body are provided with openings through which the carrier is input and output; after the carrier is input to the cabinet via the opening, the conveyer drives the carrier to move, and label information is read via the RF reader; inner sides of the side plates of the cabinet are provided with elevating doors respectively; when label information of the carrier is to be read, the elevating doors seal the openings at the two sides respectively to form an enclosed space; and the RF reader is started when the elevating door completely fall, and is stopped when the carrier is moved to the output end of the conveyer. The detector can automatically enclose the cabinet and read label information after the carrier is input, and the accuracy of RF label identification is ensured.