Any animal, plant and human body have the natural ability to absorb radiation, but no research has proved that a species has a particularly strong ability to absorb radiation. Cactus grows in the desert with strong sunlight, which can resist certain sunlight and ultraviolet rays, but the radiation energy generated by sunlight is different from that generated by computer screens or other electrical appliances. Radiation is an invisible wave, which has the ability to penetrate any organism, will destroy the DNA of cells, and seriously cause variation; Sunlight is a kind of radiant energy, which generates heat like candlelight and will not cause immediate harm to human body. The author of the rumor may regard radiant energy as radiation. Therefore, putting a cactus next to the computer can absorb radiation and reduce the harm to the body. It is a "natural" inference, or it may be a marketing move of the merchant, and there is no scientific basis. Moreover, whether computer radiation has an impact on the human body and how harmful it is is is inconclusive.
Students and office workers who often use computers to set pots of cactus to green their desktops can relieve eye fatigue, but if they want to reduce the harm of radiation to human body, they should drink more green tea. Active substances such as tea polyphenols in green tea are beneficial to resist radioactive substances.