双十一网购狂欢节源于淘宝商城（天猫）2009年11月11日举办的促销活动，当时参与的商家数量和促销力度均有限，但营业额远超预想的效果，于是11月11日成为天猫举办大规模促销活动的固定日期。
The double 11 online shopping Carnival originated from the promotion activity held by Taobao Mall (tmall) on November 11, 2009. At that time, the number of merchants and promotion efforts were limited, but the turnover was far beyond the expected effect, so November 11 became the fixed date for tmall to hold large-scale promotion activities.