The present disclosure provides a method, a device, and a live broadcast system for preventing automated farming. The solution authenticates the validity of a corresponding client according to a number of acquired gifts. The method requires either a manual or an automatic verification method on the basis of a number of acquired gifts, so as to control those users who have acquired a larger number of gifts, and prevent hackers or skilled individuals from automatically farming gifts by means of software tools. The method provides viewers who properly defeat enemies with more opportunities to acquire gifts, and enables more viewers to participate in interactive livestream activities, thereby strengthening the audience appeal of a streaming platform and creating an enjoyable user experience.