On returning to Taiwan, Wu San-lien did a little business, but was not successful, and decided to go into politics. At his first try he was elected into the first National Assembly with the highest number of votes of any candidate throughout China.
回台灣後，吳三連做過一點小事業，卻並不順利，他決定從政，一舉當選全國第一屆國大代表，得票數是全國第一。