Taiwan passed the legislation of Money Laundering Control Act in 1996 and the practical operation of the Act is fruitful in the past 13 years, but during the two mutual evaluations on AML/CFT separately conducted by Asia/Pacific Group on Money Laundering in 2001 and 2007, the two mutual evaluation teams have raised improving recommendations regarding to the significant currency transaction reporting system and freezing, seizure and disposal prohibition mechanism of proceeds of crime. The Anti-Money Laundering Law in Mainland China came into force in January 2007, and it has already demonstrated preliminary fruit under the active supervision and planning of the People's Bank of China. The Anti-money laundering supervision is the authority of the Bank and the China Anti-Money Laundering Monitoring & Analysis Center is in charge of collecting, integrating, storing Currency Transaction Reports and Suspicious Transaction Reports, and studying, analyzing, disseminating anti-money laundering information to related law enforcement agencies for further investigation. The CAMLMAC is also in charge of communication and cooperation with foreign counterparts. The relationship between the both sides of Taiwan Strait is becoming closer day by day. The financial supervisory authorities of both sides permit financial institutions to set up branches or offices each other. It's meaningful in history. For preventing money launderers to use financial institutions as channel to launder money, it's necessary to establish functional money laundering prevention mechanism. The purpose of anti-money laundering is to eradicate related serious crimes through the suspicious transaction reporting system which implies the customer due diligence system. Though, how to fulfill know your customer system and promote the quantity and quality of suspicious transaction reports are the final goals of efforts on money laundering prevention.