Taiping Tongbao in Northern Song Dynasty (976-984 A.D.) was founded during Taizong Taiping Xingguo. The first year number of Song Dynasty, the shape of Li Shu and seal book, judging from the coin shape, style of writing, casting technology and the common era atmosphere of coins, it can be concluded that Taiping Tongbao in seal book was coined during Taiping Xingguo in Song Dynasty. With the Taiping Tongbao Li coin, it formed the first pair of coins in the Song Dynasty. Just because Taizong was the first year of Taizong in the period of Taiping's rejuvenation, it took less than eight years. At that time, Taizong had just ascended the throne. Political and war affairs were in a hurry, the emperor's throne was stabilized, the people were comforted, the antiques were forced to take over the land outside, the Han Dynasty and the Liao Dynasty were levied, trying to unify Jiaozhi (now Vietnam) and implement the policy of keeping the interior and exterior. Therefore, the Taiping Tongbao coin, which was coined by the bank, was introduced and circulated throughout the country. After the trial coining of the seal coin, it failed to make the world because of the immature time or some unexpected change.