The 7th International Conference on Mechanical, Aeronautical and Automotive Engineering (ICMAA 2023) was held virtually from February 24-26, 2023. On behalf of the Organizing Committee of this Conference, it is my great pleasure and honor to introduce the proceedings of ICMAA 2023.The proceedings include a variety of advanced research topics which were presented in the conference. Full papers submissions were blind peer-reviewed by at least two experts from the International Program Committee in order to ensure high quality standard of research. The papers are evaluated on the basis of their originality, innovation, technical value, and applicability. The selection process followed strict criteria and consequently only 28 full papers were selected and accepted for publishing.ICMAA2023 Conference Committee has chosen Zoom as the virtual platform and invited authors to give oral presentations based on their research works, followed by a short Q&A part. Before the Conference, all the authors are to prepare and submit videos as backups in case of unexpected technical issues. In the Conference, oral sessions were well organized with participation of scientists from all over the world. They actively discussed about Modern manufacturing system and technology, Mechanical structure design and strength analysis, Friction and material life analysis, Power machinery and system simulation and etc.The success of the Conference is in a large way attributed to the expertise and experience of the thematic coordinators in promoting and coordinating the overall organization and smooth running of the Conference. Project leader(s) in each branch has put much time and effort into soliciting papers from relevant researchers for presentation at the conference. The chairperson of each session has helped ensure a lively discussion during the Q & A and kept to the time allocation. On behalf of the Conferences Committee, I would like to express our sincere thanks to them for their fervent participation. We would also like to express our sincere thanks to all the reviewers.We hope to meet most if not all of you at the next ICMAA to have an exciting academic and practical discussions/exchanges. At the meantime, do keep safe until then.List of Organizing Committees are available in this Pdf.