This standard establishes test methods for evaluating the wear resistance and friction coefficient of fine ceramic thin films under controlled dry and high-humidity environments. It is primarily applicable to thin film materials with thicknesses of approximately 1 micrometer or less. Its core objective is to simulate the service behavior of precision devices such as sensors and optical components under actual working conditions. By precisely controlling environmental humidity, it reveals the influence of moisture on the friction and wear mechanisms of thin films. Key instruments for implementing this evaluation method mainly include friction and wear testing machines capable of stable humidity control, typically employing ball-on-disk or reciprocating friction configurations to monitor friction force in real time and calculate the friction coefficient. After testing, to quantify the degree of wear, high-precision surface profilometers such as three-dimensional white light interferometers and atomic force microscopes are also required to accurately measure the depth, width, and wear volume of microscopic wear scars.