Abstract: The indoor experiment is conducted to investigate the law of standard electro-osmosis drainage of unsaturated clayey soil. Through the experiment, water yield, electric potential, electric current, the temperature of soil and the like are monitored and surveyed. Based on the data, the changing regularity of several parameters, including the cathode and anode contact resistance, the average resistance of cathode and anode areas, the average resistance of the soil are deduced and calculated. With the study of the regularity, it is beneficial for understanding and mastering the law of standard electro-osmosis drainage of unsaturated clayey soil and laying the basis on resolving the drainage problems of clayey soil slope full of water.