Electrochemical technology is a promising technique for water and wastewater treatment in the world. This technology has many advantages as compact model, saving area, highly removal efficient of non-biodegradable compounds, reduction of secondary by-products. There are some different electrochemical techniques such as electroflotation; electrocoagulation using sacrificial electrodes; direct or indirect electrochemical oxidation using Dimensionally Stable Anodes (DSA) and electrodialysis to separate ions in water. In Vietnam, some researches on water and wastewater treatment by electrochemical technology have been studied in the recently year. In this paper, notable results of studies in the application of water and wastewater treatment by electrochemical technology in Vietnam are reviewed in detail. The researching trends of the authors mainly focused on the laboratory scales and the simulated wastewater. Therefore, there are not enough scientific basis to apply for real treatment plants. In the future, electrochemical methods should be used to study the different types of wastewater at the pilot scales, especially difficult handling wastewater and toxics that biological methods cannot handle effectively.