有关交子的起源，《宋史·食货志》的记载颇多错误。《宋史》编于元末，仓促成书，存在这种情况并不奇怪。《食货志下三》记交子起源说： Concerning the origin of the intercourse, there are many mistakes in the records of “Song Shi · Food and Goods”. “History of the Song” was compiled in late Yuan Dynasty, and it was not surprising that there was such a situation. “Food goods under the three” remember son said: