In 1913, Ni Sichong was appointed Military Governor of Anhui; Ni Daolang was also appointed Governor of the Marketing for Changlu Salt General Bureau (長蘆鹽雲銷總局總辦). In 1918, Ni Daolang was appointed Manager of the Fengyang Barrier (鳳陽關). On June 2, 1921, he suppressed a demonstration of students by using military force (the Tragic Incident of June 2, Anhui), so he was criticized by public opinion, and having lost his post, he escaped to Tianjin.
In November 1924, Duan Qirui was appointed Provisional Chief Executive (臨時執政), and Ni Daolang was appointed Special Negotiator for Military Countermeasure to Anhui. In early 1927, Zhang Zongchang was appointed Vice-Supreme Commander of the Anguojun and was the Supreme Commander of the Zhili-Shandong (Zhi-Lu) United Army. Zhang invited Ni, and appointed him Commander of the Reserve of the Zhi-Lu United Army. After the National Revolutionary Army defeated the Zhili-Shandong United Army, Ni escaped to Tianjin again.
When in September the committee system was introduced to Anhui Provincial Government, Ni remained as its head. In January 1943, Anhui Provincial Government abolished the committee system, on that time, Ni also resigned from his post. From 1942, he worked as Member of the Nanjing National Government.