Embodiments of the present invention provide a security verification method and a device, and relate to the field of communications technologies, so as to verify a user identity based on a wearing status monitoring result and a pairing result of the device. The method includes: monitoring, by a first device, a pairing status of the first device and a second device and/or a wearing status of the first device； receiving a user operation instruction, where the instruction includes information about an interface operated by a user； when it is determined, based on the information about the interface, that the interface is an access-restricted interface, determining a wearing status and/or a pairing status of the first device within a verification time window； determining, based on the wearing status and/or the pairing status within the verification time window, whether the first device is in a secure state； and locking the interface if the first device is in an insecure state； or responding to the user operation instruction if the first device is in the secure state.
