The MV adsorbent uses compounds of carbon, silicon, calcium and other elements with a specific crystal structure as raw materials to make particles with good fluidity. Abundant pores, special structure and element composition make it possible to adsorb and filter the micro space for a long time, which can solve the problem of product quality degradation and shortened life caused by moisture and volatile small molecule compounds, such as OLED display, portable Optical modules and acoustic modules of electronic equipment, optical modules of photographic and camera equipment, computer storage hard drives, etc.