Field survey on annual wild soybean resources was carried out in 10 provinces of part of China from 2002 to 2004. Eight hundred and fourteen wild soybean resources were collected from 221 counties and towns. Compared with the collection information of the Annual Wild Soybean Catalogue, 45 new distribution places were found. According to the investigation, distribution area of wild soybean was sharply decreased; wild soybean resources are in dangerous survival status in China.