A method for processing communication identification comprising: obtaining communication records about a plurality of communication identifications of a user; determining use frequencies according to the obtained communication records, each use frequency corresponding to a respective communication identification in the plurality of communication identifications, respectively when the communication identification is used to identify the user as a sender and a receiver; determining the communication identification with the highest use frequency as an often-used communication identification according to the use frequencies corresponding to the respective communication identifications, by: for each of the communication identifications, judging whether a difference value between the use frequency of the communication identification when used to identify the user as a sender and the use frequency of the communication identification when used to identify the user as a receiver is in a range of a preset difference value; when the difference value is in the range of the preset difference value, determining that the communication identification is used to identify the user as a receiver, and determining the use frequency of the communication identification when used to identify the user as a receiver; and determining, from the communication identifications determined as identifying the user as a receiver, the communication identification with the highest use frequency when used to identify the user as a receiver as the often-used communication identification; and generating a markup instruction according to the often-used communication identification, and sending the markup instruction to a terminal storing the communication identifications of the user, so that the often-used communication identification of the user is marked by the terminal. obtaining communication records about a plurality of communication identifications of a user; determining use frequencies according to the obtained communication records, each use frequency corresponding to a respective communication identification in the plurality of communication identifications, respectively when the communication identification is used to identify the user as a sender and a receiver; determining the communication identification with the highest use frequency as an often-used communication identification according to the use frequencies corresponding to the respective communication identifications, by: for each of the communication identifications, judging whether a difference value between the use frequency of the communication identification when used to identify the user as a sender and the use frequency of the communication identification when used to identify the user as a receiver is in a range of a preset difference value; when the difference value is in the range of the preset difference value, determining that the communication identification is used to identify the user as a receiver, and determining the use frequency of the communication identification when used to identify the user as a receiver; and determining, from the communication identifications determined as identifying the user as a receiver, the communication identification with the highest use frequency when used to identify the user as a receiver as the often-used communication identification; and for each of the communication identifications, judging whether a difference value between the use frequency of the communication identification when used to identify the user as a sender and the use frequency of the communication identification when used to identify the user as a receiver is in a range of a preset difference value; when the difference value is in the range of the preset difference value, determining that the communication identification is used to identify the user as a receiver, and determining the use frequency of the communication identification when used to identify the user as a receiver; and determining, from the communication identifications determined as identifying the user as a receiver, the communication identification with the highest use frequency when used to identify the user as a receiver as the often-used communication identification; and generating a markup instruction according to the often-used communication identification, and sending the markup instruction to a terminal storing the communication identifications of the user, so that the often-used communication identification of the user is marked by the terminal.