In order to promote the aging adaptation of the signage system in Longsheng scenic spot, the work aims to propose the index system and optimization evaluation of the design scheme based on AHP-TOPSIS, so as to provide the path optimization and promotion strategy for the optimization of the aging adaptation scheme of signage system in the scenic spot. First of all, based on literature survey, field research and expert interviews, an evaluation index system was constructed for the aging adaptation of signage system facilities in the scenic spot. Secondly, the AHP method was used to construct the judgment matrix and the experts assigned clear weights to guide the scheme generation. The TOPSIS method was used to obtain the weighted standardized matrix of the multivariate scheme and obtain the positive and negative ideal solution distance and the optimal scheme ranking. Finally, according to the results of weight ranking and optimization scheme analysis, a universal promotion strategy was proposed. The evaluation process was applied to the aging adaptation design scheme of the signage system in Longsheng Scenic Spot and the optimal scheme was obtained. The feasibility and effectiveness of the model were verified, and the feasible aging adaptation promotion strategy was proposed. The application of AHP-TOPSIS method to the aging adaptation design scheme of signage system in Longsheng Scenic Spot can effectively avoid the one-sidedness and human subjectivity of single elements and make the optimization process more objective and the optimization decision more scientific. It has certain practical significance, theoretical reference and universal value in the research of aging adaptation design of signage system in the scenic spot.