The invention provides a fluorescent quantitative PCR detection primer and method for Acinetobacter ruckeri. The nucleotide sequences of the primers are respectively: TTATTTGATCAGGCGCAAAG and CGTTTCTTGCCATCCCATTTA; the detection method includes: 1) extracting the DNA of the sample to be tested; 2) using the DNA as a template, using the above primers, and using the fluorescent quantitative PCR method to amplify Acinetobacter ruckeri , and the fluorescence value Ct was collected during the annealing stage at 55°C 样品 value; 3) according to the model bacteria concentration is ×10 2 ,×10 3 ,×10 4 ,×10 5 ,×10 6 ,×10 7 When the corresponding Ct 标准 Value, establish the bacteria number lg of Acinetobacter ruckeri 标准 with Ct 标准 A standard curve of values, and according to Ct 样品 value, the number of Acinetobacter ruckeri in the sample was determined on the standard curve. The primer provided by the invention has strong specificity and high sensitivity, and its detection limit can reach ×10 2 cfu / mL, the detection method is fast, accurate, and time-consuming.