The invention relates to a primer, a probe and a kit for detecting infectious bovine rhinotracheitis viruses, and discloses a primer and probe combination used for detecting the infectious bovine rhinotracheitis viruses according to an RPA technology, the forward primer sequence of the primer and probe combination is shown as SEQ ID No.1; the reverse primer sequence is shown as SEQ ID No.2; the probe sequence is shown as SEQ ID No.3. The invention further discloses the kit for detecting the infectious bovine rhinotracheitis viruses. The primer and the probe are adopted for detection, a clinical sample is only subjected to virus DNA crude extraction and RPA isothermal amplification, the result can be displayed on a lateral flow chromatography test strip, a heat circular reaction is not needed, and amplification needs not to be performed in a PCR instrument; the primer, the probe and the kit have the advantages of being high in sensitivity, strong in specificity, simple in reaction procedure, short in detection time, and suitable for clinical field detection in a non-lab environment, and have a wide application prospect.