Abstract: Hydrogen energy,as an important lever for the transformation of green and low-carbon energy,has received widespread attention and great attention from countries around the world. Hydrogen production by electrolytic water,as an important green hydrogen production technology,especially the use of renewable energy to convert electricity into hydrogen,has broad market prospects in the future. This paper analyzes the research status of four main hydrogen production technologies by electrolysis water and electrolysis cell technologies,and summarizes the future development trends of hydrogen production technology by electrolysis water. In the hope that this study can provide reference ideas for the research directions of alkaline hydrogen production by electrolysis water,proton exchange membrane hydrogen production by electrolysis water,solid oxide hydrogen production by electrolysis water,and anion exchange membrane hydrogen production technology by electrolysis water,and assist in the research and commercialization process of hydrogen production by electrolysis water.