The electrochemical in-situ cell is an in-situ experimental device designed for carrying out desktop XAFS spectrometer experiments or synchrotron radiation XAFS experiments. This in-situ cell is mainly used in XAFS transmission mode. Equipped with a Kapton membrane window, a three-electrode design, and the liquid layer thickness is adjustable. It is compatible with strong acid/strong alkali electrolytes and can carry out various electrochemical experiments.