As both the economic pillar of the manor estates of feudal lords and the financial mainstay of the old local government of Tibet, Khral-Ula corvee reflected the political and economic relationship between feudal lords, serfs and herdsmen, the economic relations within the ruling regime, and the political and economic relationship between the local government and the Central Government in old Tibet. This paper intends to discuss the formation and basic features of As both the economic pillar of the manor estates of feudal lords and the financial mainstay of the old local government of Tibet, Khral-Ula corvee reflected the political and economic relationship between feudal lords, serfs and herdsmen, the economic relations within the ruling regime, and the political and economic relationship between the local government and the Central Government in old Tibet. This paper intends to discuss the formation and basic features of