The invention discloses an information interception method and device, and belongs to the technical field of the Internet. The method comprises a step of obtaining information to be published on a public platform; calculating the similarity between the information to be published and labeled junk information; judging whether the similarity is more than a first preset threshold value or not; and intercepting the information to be published when the similarity is more than the first preset threshold value. According to the invention, the similarity between the information to be published on the public platform and the labeled junk information is calculated, and the information to be published is intercepted when it is determined that the similarity between the information to be published and the labeled junk information is more than the first preset threshold value. When the similarity between the information to be published and the labeled junk information is more than the first preset threshold value, it can be determined that the information to be published is similar to the labeled junk information, so that the interception of the information to be published improves the reliability of interception junk information, and the perfect order of the public platform is maintained.