Provided are a method and device for determining Subscriber Identity Module (SIM) card information. The method includes that: negotiation with a terminal is performed to establish a session Identifier (ID) channel; SIM card information allocated for the terminal by a network-side server is acquired; and the SIM card information is sent to the terminal through the session ID channel. With adoption of the technical solutions, the problem in the related art that a large storage space is wasted and a SIM card information acquisition flow is complex because the SIM card information may be acquired only through a physical SIM card is solved, a physical SIM card form is not required, cost is greatly reduced and, meanwhile, a SIM card information acquisition process is simplified.