Abstract: Signature System is crucial to the operation of science. With the transformation of the production mode of knowledge, the traditional authorship has exposed the crisis. Then the contributor model was proposed. Can the contributorship solve the signature problem and better realize the function of the scientific signature system? After in-depth study of the function of the scientific signature system and the crisis of authorship, it is found that the characteristics of modern scientific activities, such as scientific cooperation, commercialization research and digital publication, lead to signature system dysfunction, and the contributorship could better adapt to these characteristics. The rationality of the contributor model replacing the author model is that the one-dimensional contribution description is replaced by the two-dimensional contribution description, which lead to a more accurate contribution description. However, the contributorship does not fully reflect the real contribution and does not completely solve the scientific signature problem.