Number marking method and device

The present disclosure relates to the technical field of computers. Disclosed are a number marking method and device. The method comprises: receiving an application identifier and an unknown number of a service application sent by a calling terminal, the unknown number being a telephone number provided for a user by the service application, and being called by the calling terminal by means of invoking a telephone application through the service application; acquiring, according to the application identifier, an application type corresponding to the service application; and marking, according to the application type, the unknown number. The present disclosure can solve the problem of inaccuracy in marking an unknown number due to wrongly marking an identity input by a user, thereby capably achieving the effect of improving the accuracy of marking the unknown number.