The invention discloses a call processing method and device. In the scheme of the invention, the single credibility of a calling number is assessed through an assessment coefficient, and a prompt that the calling number cannot be readily believed is sent to a called number when the single credibility is less than a first preset credibility threshold. Therefore, a subscriber of the called number is timely notified not to believe in the calling number, so that the precaution consciousness of the subscriber of the called number can be improved, and the possibility that the subscriber of the called number is disturbed or defrauded is reduced. Whether to send the prompt that calling number cannot be readily believed to the called number or not can be determined only through the assessment coefficient, and a malicious voice message can be determined only when the calling number belongs to a local operator and the voice message is initiated from another operator in the prior art, so that the technical scheme provided by the embodiment of the invention is wider in application range and can improve the malicious voice message discovering efficiency.