The DAS data contributed was collected during the DAS experiment on the campus of Nanjing University. This experiment is supported by the “Transparent Nanjing University” project. The total length of the fiber optical cables is about 3.8 km, and it is buried in a conduit underground on the campus at a depth of approximately 0.5 m. The sampling frequency is 100 Hz. The data from February 14, 2023 to February 28, 2023 was uploaded. This dataset is a contribution to the "Global DAS Month" initiative in February 2023, which aims to use DAS to monitor global seismicity