There are multiple definitions - click on the translation that matches your context.

了解你的客户

词组

full

know your customer

phrase

Definitions of know your customer

English

the principle that a lawyer, accountant, or other professional should know the identity of a client to guard against fraud, money laundering, or other illegal activities that the client might be engaged in

Adequate know your client checks will help prevent your firm business being used for criminal activities.