The invention relates to an interphone for security management of a community. The interphone comprises an antenna, rotary knobs, a loudspeaker, a button, a body, a fixing mechanism, and an extensionand retraction mechanism, wherein the fixing mechanism comprises a first driving assembly, a cylinder, a pipeline, a piston, a first transmission rod, a casing, a sucking disc and an air bag; and theextension and retraction mechanism comprises a limiting assembly, a second driving assembly, two first through holes, a base pipe, two first springs, and a first support rod. The interphone for the security management of the community has the advantages that through the fixing mechanism, a user can fix the interphone on a table when the interphone is not used, so that the phenomenon that the useraccidentally touches the interphone when doing office work at the table and the interphone therefore drops and is damaged is avoided, and unnecessary losses are further reduced; and moreover, antennaextension and retraction functions are achieved through the extension and retraction mechanism, so that the antenna can be prevented from being broken due to body movements of the user when the interphone is fixed on clothes of the user, and the practicality of the interphone is improved.