Abstract: Cao Xuequan, a scholar who lived in Ming dynasty, helped preserve lots of documents of Ba-Shu in his Sights in Shu. However, due to his carelessness in verifying some facts in haste, there are some errors in the book. This essay makes an attempt to correct four errors: in volume 8, mistaking Cui Gongfu's poem for Li WEi's; in volume 15, mistaking one Bieye for another; in volume 17, mistaking Tushansi in Bai Juyi's "solo traveling of Tushansi" for Tushan in Ba county; in volume 29, mistaking Li Zhenwu's deeds in Zizhou for Su Rong's.