A principal-agent relationship exists among creditors,shareholders and management,and information asymmetry among them leads to asymmetric loss functions,which induces conservative accounting.This paper investigates the determinants of accounting conservatism using accrual-based measures and data from 2001 to 2006 in China.We find that a higher degree of leverage,lower level of control of ultimate shareholders and lower level of management ownership lead to more conservative financial reporting.We also find that political concerns and pressures among state-owned enterprises are greater than those among non-state owned enterprises,which leads to more conservative financial reporting among the former.However,a decrease in such concerns leads to a decrease in accounting conservatism.Overall,we find that among the determinants of conservatism in China,debt is the most important,followed by ownership,and that board has little influence. A principal-agent relationship exists among creditors, shareholders and management, and information asymmetry among them leads to asymmetric loss functions, which induces conservative accounting. This paper investigates the determinants of accounting conservatism using accrual-based measures and data from 2001 to 2006 in China We find that a higher degree of leverage, lower level of control of ultimate shareholders and lower level of management ownership lead to more conservative financial reporting.We also find that political concerns and places among state-owned enterprises are greater than those among among non- state owned enterprises, which leads to more conservative financial reporting among the former. Home, a decrease in such concerns leads to a decrease in accounting conservatism. Overall, we find that among the determinants of conservatism in China, debt is the most important, followed by ownership, and that board has little influence.