The invention provides a collaborative spectrum perception method based on credibility in a mobile scene, relates to the technical field of information and communication and aims to solve the problem that malicious user attacks probably exist in the network of the mobile scene of cognitive users. The method comprises the following steps: through the adoption of the concept of the credibility, firstly, the whole trial zone is partitioned into a plurality of small cells; then detection results uploaded by all the cognitive users are compared in each cell, the credibility of the cognitive users are independently updated so as to serve as references to reject malicious users and weight coefficient of each cell is calculated; through the simulation verification, the situation that the method provided by the invention can obtain favorable system detection property can be realized. In the network with 50 cognitive users, among whom 15 are malicious users, when the false alarm probability of the system is 0.1, the system detection probability obtained through the adoption of the collaborative spectrum perception method is 0.99. Specific to the scene that the cognitive users are mobile and major users are static, the collaborative spectrum perception method is used for overcoming the malicious attacks launched by the malicious users in the system.