An information hiding scheme for vector maps is presented to identify the source after the vector map is leaked in some key application areas. In this scheme, the fingerprint image of the map owner can be conver-ted into a character string as the watermark, and then the watermark will be embedded into the coordinate de-scriptions of the attribute file by the "0-bit value" programming method. This programming algorithm ensures that the accuracy is lossless and the graphics is unchanged for any vector map. Experiments show that the pres-ented hiding scheme has stable robustness, the average similarity rate is 97. 2% for fingerprints matching and the false non-match rate is 1.38% in the blocking test. In the opening test, the former reaches 84. 46% and the latter reaches 5.56%.