The present invention belongs to the technical field of biology and discloses a LAMP primer combination, detection method and kit capable of distinguishing porcine circovirus type 2 and type 3 typingdetection. The primer combination can respectively detect the porcine circovirus type 2 and the porcine circovirus type 3, and also has no cross reactions with other porcine viruses (such as circovirus type 1, porcine parvovirus, pseudorabies virus, porcine cholera virus, swine influenza virus, highly pathogenic porcine reproductive and respiratory syndrome virus, etc.). Fluorescent dye is added into a LAMP reaction system, so that detection of the porcine circovirus type 2 and / or type 3 can be realized by a one-step method, whole-process real-time monitoring is realized by combining fluorescence quantification, results can be obtained within 1 hour, and detection sensitivity can reach 100 copies / [mu]L. The detection method has advantages of simplicity, convenience, rapidness, sensitivityand specificity, and also avoids errors caused by artificial judgment and environmental pollution caused by uncovering.