GB/T 41493.2-2022 specifies an accelerated life test method for mixed metal oxide anodes used in cathodic protection in soil and natural water environments, aiming to compare the durability of different anode materials and evaluate the designed expected service life of anodes under rated current. The standard clarifies that the test principle involves accelerating the electrochemical reaction process of the anode by applying a current density higher than that in actual working conditions. The core components of the test apparatus include a DC constant current power supply (with output accuracy meeting test requirements), an electrolytic cell (simulating soil/water environmental media), a temperature measurement instrument (controlling the test environment temperature), and data acquisition equipment (for real-time recording of electrical parameters). During the test, the cell voltage is continuously monitored. A sudden change in cell voltage is used to determine anode failure. By combining the test duration and current density, a life curve is fitted, ultimately providing quantitative technical support for anode material selection, engineering design, and quality control.