We are glad to introduce you that the 2020 2nd Global Conference on Ecological Environment and Civil Engineering (GCEECE 2020) was carried out in the form of virtual conference on August 8, 2020. Due to the impact of COVID-19 and travel restrictions, GCEECE 2020 was held via online collaboration tool, Zoom, which is different from the traditional way. GCEECE 2020 aimed to provide a flexible platform for experts and scholars in the field of computer engineering and intelligent communications to disseminate the latest research achievements and advanced technologies, as well as to promote the cooperation between each other.Firstly, we were honored to invite Prof. Xueying Liu, Zhejiang University of Water Resources and Electric Power as conference chair and keynote speaker. Prof.Liu is the state Council government special allowance expert, President (concurrently) of Shuanglin Provincial Research Institute of Environmental Engineering. His research direction is green construction and safety protection, environmental ecological restoration. During the conference, the conference model was divided into four sessions, including keynote speeches, invited speeches, oral presentations and online Q&A discussion.In the keynote speeches session, keynote speakers were each allocated 30-40 minutes to hold their speeches. We were honored to invite four distinguished experts as keynote speakers to present their insightful speeches. Prof. Xueying Liu from Zhejiang University of Water Resources and Electric Power, China, made a speech about Analysis of Water Engineering Heritage and Its Value System. Prof. Zheng Chen from Guangxi University, China and his speech title is: The effect of microenvironmental conditions on the formation of passive film of steel bar in concrete. Prof. Hongguang Liu from Shihezi University, China, shared his study on Research and Prospect of subsurface drainage technology in arid area. Prof. Tao Zhang from China Agricultural University, China, held a speech on the topic of Biomass Stabilization: Phosphorus Fixation and Utilization.In the invited speeches session, invited speakers were each allocated 20-30 minutes to hold their speeches. We were pleased to invite Prof. Tianpeng Gao, Xi’an University as invited speaker to made a speech about Removal of Heavy Metals and Petroleum Pollution by Plant, Microorganisms and Ecological Remediation Technology in Mining Areas. In the oral presentation’s session, some scholars were given about 10-15 minutes to perform their oral presentations one by one. There were five scholars to present their speech on the topic of environmental protection, agricultural ecology, etc. In the Q&A session, all participants were invited to join in academic groups to discuss and explore the academic issues after the presentations. The discussion session will last 40 minutes.The proceedings collected the latest research and results in the field of ecological environment and civil engineering. The topic of this collection is related to ecological environment protection, pollution prevention, soil protection, hydraulic engineering, civil engineering and so on. All manuscripts published in the proceeding have been through rigorous review and process to meet the requirements of International publication standard.Finally, we would like to express our sincere gratitude to the Chairman, the distinguished keynote speakers, as well as all the participants. Because of your enthusiastic participation, the conference was successfully held as planned. Thanks to the information technology, the online conference made it easier for more people join in our conference. We had around 50 attendees this time, and we are expecting more and more experts and scholars from all over the world to join this international event next year. We also want to thank the publisher for publishing the proceedings. We are grateful to all those who have contributed to the success of GCEECE 2020. We hope that all participants and other interested readers benefit scientifically from the proceedings.The Organizing Committee of GCEECE 2020Organizing Committees, Conference Chair, Local Committee, International Technical Committee are available in the pdf.