Genetically modified（GM） maize（Zea mays L.） C0030.1.1 is developed by Beijing DaBeiNong Biotechnology Co., Ltd. The purpose of this study is to develop the event-specific qualitative detection method of this maize C0030.1.1. Based on the foreign inserted gene, a series of specific PCR primers were designed on the left and right of the flanking binding site. And then the PCR reaction systems were screened and optimized based on primer screening, specificity test, sensitivity test, differential primer concentration and a series of annealing temperatures. The maize C0030.1.1 events-specific qualitative PCR detection method was established finally on the right of the flanking binding site. The detection sensitivity was 0.1%. After validated by 8 external laboratories, results showed that this method could specifically detect the samples of C0030.1.1 event and had a good repeatability and reproducibility.