Sun Fujia was born in Wucheng, Beizhou (now Qinghe, Hebei). His birth year is unknown, but he died in the third year of Emperor Xianqing of Tang Dynasty (658). In the fifth year of Emperor Wude of the Tang Dynasty (622), there was no official record of Renwu. He was the first number one scholar in the Tang Dynasty and the first number one scholar in Chinese history.
Sun Fujia passed the Jinshi examination in the Sui Dynasty in his early years. In the last years of Emperor Yang's career in the Sui Dynasty, he served as the history of Dali Temple. He was a junior official with little talent. After the death of Sui Dynasty, he became an official in Tang Dynasty. In the early years of Wude, he wrote to Emperor Gaozu and confessed three things: firstly, "to open up a way for people to speak out"; secondly, to abolish "hundred operas and music"; thirdly, to ask "to carefully select colleagues for the crown prince and the kings." After reading this, Emperor Gaozu was overjoyed and used it as a guide for the emperor. History, and gave three hundred pieces of silk. Soon after, after killing Wang Shichong and Dou Jiande, Sun Fujia suggested that Li Yuan cancel the order to investigate Wang Dou's remaining party members. He also frequently made suggestions for pacifying border defense, reducing taxes and other matters, and also asked for the establishment of an "admonishing officer" position. Emperor Gaozu all accepted it. .
In the fifth year of Wude's reign, Sun Fuga was dismissed from office because of his neglect. At that time, the imperial examination system was not yet complete, so Sun Fujia was able to avoid being an official and took the Jinshi examination. He got the first place and was awarded the title of Doctor of the Ministry of Punishment. In the first year of Zhenguan (627), Emperor Taizong of the Tang Dynasty wrote an admonishment to stop hunting, riding and shooting, which was adopted. In the fifth year of Zhenguan, he was dismissed from the official position, and soon he was appointed again. In the fourteenth year of Zhenguan (641), he paid homage to Dali Qing and became an important minister of the imperial court. Emperor Gaozong of the Tang Dynasty resigned from office due to old age in the fifth year of Yonghui's fifth year (654), and died of illness at home in the third year of Xianqing's third year (658).
Sun Fuga was loyal and sincere, and dared to speak out and give advice, like Wei Zheng. He has a magnanimous character, handles things calmly, and is not surprised by honor or disgrace. When he was serving as a censor, he would first get the decree from the court, and keep it secret after returning home. When the imperial document arrived, the whole family was overjoyed, but Sun Fujia acted as if nothing had happened.