A method of pushing passwords, a pushing system and a terminal device are provided. The method includes establishing a sharing cryptographic library which stores a plurality of application program identification codes, account names and passwords, receiving first biological characteristic information of a user, and simultaneously receiving a push request including second biological characteristic information and a current application program identification code. An account name and a password of the current application program identification code from the sharing cryptographic library is read, and the account name and the password is pushed to a second terminal device when the first biological characteristic information matches with the second biological characteristic information.