The invention relates to a PCR (polymerase chain reaction) method for detecting Hokovirus for pigs, belonging to the field of biotechnology. The PCR method comprises the steps of: adopting a PCR system of 25 microliter, respectively adding buffer solution, upstream primers, downstream primers, DNA polymerase and extracted DNA formworks into PCR reaction tubes of 0.2ml, adding sterilized ultrapurewater until the total volume is reached; evenly mixing the reagent, then pouring the reagent in a PCR amplifier, and conducting denaturation, annealing and extending for total 35-time circulation; after the reaction of the PCR is finished, taking 10mul product on agarose gel, carrying out electrophoresis by using TAE (Tris-acetate-ethylene diamine tetraacetic acid) buffer solution, observing a PCR product under an ultrasonic projection instrument, and contrasting with standard molecular weight, wherein a positive sample has 540bp segments. The detection method provided by the invention has the advantages of high sensitivity, good specificity, simplicity and convenient and fastness in operation, has low requirement for the quality of detected materials, and facilitates clinical application.