After the war, Li was involved in the construction of a steel mill and a shipyard, and he spent the rest of his days in public service. In 1958, he was named secretary general of the Council for US Aid. He later served as economic affairs minister, finance minister, minister without portfolio and senior presidential advisor. He dedicated his life to working for his country and its people.
戰後，他從事籌建煉鋼廠與造船廠的工作，此後一生戮力於公職，從民國四十七年改任美援會秘書長、之後經濟部長、財政部長、政務委員、總統府資政，一生盡心盡力，獻身於國家人民。