Dear Distinguished Authors and Guests, 2024 9th International Conference on Mechanical Structures and Smart Materials (ICMSSM 2024) was held on June 15-16, 2024 in Beijing, China. The conference program covered invited, oral presentation session and poster session from scientists working in similar areas to establish platforms for collaborative research projects in this field. The conference aimed to bring together leaders from mechanical structures and smart materials to exchange and share their experiences, present research results, explore collaborations and to spark new ideas, with the purpose of developing new projects and exploiting new technology in this field. We hope that the conference has resulted in significant contribution to the knowledge on mechanical structures and smart materials. To this end, this book contains the papers presented at ICMSSM 2024. All papers were accepted through a peer-review process conducted by the conference program committee and international reviewers. Finally, we would like to thank all authors and participants of ICMSSM 2024 for their contributions to making this conference a success. We look forward to your participation in the 10th ICMSSM in 2025. With our warmest regards, The Committee of ICMSSM 2024 List of Committee Members are available in this Pdf.