The 6th International Conference on Hydraulic and Civil Engineering (ICHCE 2020) is hosted by Shaanxi Society of Geometics and Engineering, Xi’an University of Architecture and Technology, xijing university, Shaanxi Key Laboratory of geotechnical and underground space engineering and Youth Working Committee of shaanxi Institute of Geometics and Engineering, co-organized Xi’an University of Technology, Xi’an Jiaotong University, Hehai University, Chongqing Jiaotong University, Northwest A & F University, Chang’an University, Xi’an University of science and technology, Anhui Jianzhu University, Xi’an University of Technology, Education Committee of the Society of Geomethrology and Engineering of Shaanxi Province, Yulin College, Northern University of Technology, Xi’an Petroleum University, China First Highway Survey and Design Research Institute Co., Ltd, China Power Engineering Consultants Northwest Power Design Institute, Xi’an Research Institute, China Coal Science and Technology Group, China Railway First Survey and Design Institute, Northwest Survey and Design Research Institute of China Hydropower Consulting Group. The conference was successfully held during December 11th to 13th, 2020 at Xi’an China. It mainly focused on the research fields of water conservancy and civil engineering, and is dedicated to provide the experts, scholars, engineers, etc. from different colleges and universities, research institutes, enterprises and institutions from home and abroad, with an academic platform for sharing of academic research findings, exploration of the cutting-edge engineering issues and discussion on the current opportunities and challenges, in a concerted effort to promote international cooperation and communication and the industrialization of scientific research results.The conference model was divided into two sessions, including oral presentations and keynote speeches. In the first part, some scholars, whose submissions were selected as the excellent papers, were given 15 minutes to perform their oral presentations one by one. Then in the second part, keynote speakers were each allocated 30-45 minutes to hold their speeches.There were over 130 experts and scholars in the area of Hydraulic and Civil Engineering representing different famous universities and institutes around the globe to attend the conference. During the conference, we were pleased to invite six distinguished experts to present their insightful speeches. Jianping Zhou, Chief engineer of China Power Construction Group Co., Ltd. His report title: Current situation and future development trend of hydropower in the world. Hongwei Wu, Associate vice president, Hong Kong University of science and technology, held a speech: Theory and technology of vegetation slope protection based on unsaturated soil mechanics. Chongshi Gu, Dean of School of water conservancy and hydropower, Hohai University, shared a speech on his specialty related to Theory and method of disease mechanism and health diagnosis of major water projects. Shengshui Chen, President of Nanjing Institute of water resources, talked about Key technical problems and Countermeasures of Dashixia extra high concrete face sand gravel dam. The others keynote speakers, Prof. Deyi Wu from Anhui Jianzhu University and Prof. Liaojun Zhang from Hohai University also presented a wonderful speech.The participants of the conference were from most part of the world, with background of either academia or industry, even well-known enterprise. The success and prosperity of the conference is reflected high level of the papers received. The proceedings are a compilation of the accepted papers and represent an interesting outcome of the conference. (ICHCE 2020) for exchange of research findings, analysis, information, and knowledge in areas which include but are not limited to: Water Project, Civil Engineering, Geotechnical Engineering, Traffic and Bridge Engineering, Disaster Prevention and Mitigation and Protection Engineering and other related topics.We would like to acknowledge all of those who supported ICHCE 2020. Each individual and institutional help were very important for the success of this conference. Especially we would like to thank the organizing committee for their valuable advices in the organization and helpful peer review of the papers. We sincerely hope that ICHCE 2020 will be a forum for excellent discussions that will put forward new ideas and promote collaborative researches. We are sure that the proceedings will serve as an important research source of references and the knowledge, which will lead to not only scientific and engineering progress but also other new products and processes.The Organizing Committee of ICHCE 2020List of Committee member are avalible in the pdf.