In order to solve the problem of expert judgment vagueness and uncertainty, a method to preprocess expert experience information based on fuzzy uncertainly weighting is proposed. Firstly, credibility was introduced into the trapezoidal fuzzy description of expert experience information. Then, uncertainly weighting was used to carry out expert experience information fusion, and get the testability prior estimates value. The research shows that the method is correctly and effectively, which can meet requirements of expert experience information preprocessing.