The study of Abdolhossein Khan Moazezolmolk Teymourtash's performance from Majlis-e-Shouraye Melli (The National Consultative Assembly) to the establishment of Majlis-e-Moassesan (Constituent Assembly).

Teymourtash had a fundamental role in transforming the authoritarian power circle of Qajar to Constitutional Monarchy and informing the parliament deputies of the Western states' games of power. He, along with Forooghi, Modarres Taghizade, Davar and other, was one of the lecturers and the leader of Eatedalyon (The Moderates) party in the second parliament (Majlis). He is known as a key figure in being an arbitrator in interaction with other countries and passing legislative resolutions such as establishment of Gendarmerie, opposition with The 1919 Treaty, immigration of parliament deputies from Qom to Kermanshah during 1919 occupation, granting the Northern oil exploitation right to the American company, The Mix Committee decisions, closure of the parliament on the issue of Schuster and also the period of "gap" and serving as the governor of Gilan ,Kerman and Baloochestan, ministry of justice, impartiality on the issue of republicanism, joining Reza Shah's cabinet, establishment of Majlis-e-Moassesan (Constituent Assembly) and ousting Qajar dynasty from power. This study, utilizing a desk research method, tries to find an answer to this question: What political roles had Moazezolmolk had from the time of being a parliament deputy to the establishment of Majlis-e-Moassesan (Constituent Assembly) and before serving as the Ministry of Court of Pahlavi? We also study his performance during socio-political changes of the period by investigating existing historical documents and sources.