Broad bean is the troditional crop planted in Qinghai province.The altitude of the productive area ranges from 1100m to 3200m,.the plant enjoys long sunshine and the time of sunshining in a year totals 2931 hours.Besides, the climate here is cool and the temperature differs grately between day and night. Taking all of these advantages, the sees of the Qinghai broad bean are big and fat. They are by no means affected by blight. It is this characteristic that make Qinghai broad bean being welcome worldwide. The product has been receiving warm welcome because of its aboundant contement of protien and vitamain.