This paper focuses on the structural performance analysis of the webbing mount in the dome of an 8m-class telescope, aiming to ensure the stability and reliability of the structure under extreme environmental conditions through theoretical and numerical simulation. Firstly, the key structure, the webbing mount, was accurately modeled based on the construction drawings of the dome. Subsequently, an in-depth theoretical analysis was conducted to evaluate the webbing forces at wind speeds of 8 to understand its response to external wind loads. In order to validate the rationality of the design and to identify potential weak areas, static and thermal-structural coupling analyses of the webbing mount were performed using ANSYS software. The static analysis reveals the stress and deformation distribution of the structure under static loading, while the thermal-structural coupling analysis considers the effect of temperature change on the structural performance. Through this series of analyses, we clarify the structural strength and stiffness of the webbing mount, and verify that it meets the requirements of normal operation and extended service life of the telescope. The research in this paper not only provides an important theoretical basis for improving the structural stability and reliability of the telescope dome, but also provides a valuable reference for the design and optimization of similar structures.