The purposes of this research are: (1) to test the relationship between information asymmetry, audit quality (constraints on earnings management) and earningsmanagement, and (2) to test the influence banking regulation, profitability (incentives to manage earnings) to earnings management. The regulation mentioned in this research is banking regulation which directly and indirectly influences company earnings. They are carefulness regulation and health level regulation. The main motivation of earningsmanagement by the banking industry is to fulfill the regulation. Result of this research can benefit to theory development, accounting standard organizer, regulator (BankIndonesia), and also investor.This research data are collected from ICMD (Indonesian Capital Market Directory) and/or annual report company which are provided by the Capital Market ReferenceCenter (PRPM) of Indonesia Stock Exchange (BEI) and also financial statement of public banking companies published by Indonesia Banking Directory. Population of this research is all public bank exists at Indonesian in the year 1999 until 2004 which enlist in BEI. Purposive sampling method was used to collecting data, and 120 observations are collected.The existence of earnings management in banking industries is indicated by the mean of discretionary accrual not equal to zero (negative). The discretionary accrual as a proxyto earnings management is influenced by the health level banking regulation. Banks whose health score decrease make reducing earnings to can increase their balance of productive assets loss allowance (PPAP). Information asymmetry moderates relationship between banking regulation of carefulness and earnings management. This conclusion support the research of Rahmawati (2006), Beaver and Engel (1996), Wahlen (1994), Moyer (1990), Niswander and Swanson (2000). Audit quality do not influenced earnings management in this research, because this research uses audit quality proxy with size of public accountant firm. Profitability influences earnings management at significant 10%.Keywords: earnings management, information asymmetry, banking regulation, audit quality, profitability.