The present invention provides a security information interaction method. The security information interaction method includes the following steps that: when a security information interaction initiator cannot implement a security information interaction process by himself or herself, the security information interaction initiator sends an implementation proxy request to a remote proxy implementer through a client operating on a first communication device; the proxy implementer receives the implementation proxy request through a client operating on a second communication device and executes identity authentication operation after receiving the implementation proxy request; and after the result of the identity authentication operation indicates successful authentication, the proxy implementer, replacing the initiator, implements the security information interaction process requested by the initiator. The security information interaction method disclosed by the present invention has high security.