Protection method of behavior characteristics in social network

The invention discloses a protection method of behavior characteristics in a social network. The protection method is characterized by comprising the following steps that 1, for a total behavior set of information participants, behavior characteristic sets and characteristic category sets of the target participants are obtained; 2, a total characteristic term set of the participants and characteristic categories to which behavior sets of the participants belong are obtained; 3, a similar participant set of the target participants is obtained; 4, behavior sets corresponding to similar participants, not in the same characteristic categories as the target participants, in the similar participant set are obtained, and behaviors corresponding to g similar characteristic terms are extracted as similar characteristic behaviors; 5, the similar characteristic behaviors are recommended to the target participants. By means of the protection method, the behavior characteristics of the information participants in the social network can be effectively protected, so that various private data are protected, and data security is improved.