The database for Chinese rice varieties and their genealogy(http://www.ricedata.cn/variety/) is an important subplatform of the Chinese National Rice Data Center (http://www.ricedata.cn/), which collects different kinds of Chinese rice varieties, including  approved in provinces or by national committee, utilized in  wider areas, introduced or local. Retrieval for rice variety and pedigree search were developed as two core components of the database. During the collection  of the varieties and their pedigrees, a typical problem is that some names of varieties were confused or mistaken easily.