75 degree alcohol is mainly used for articles or skin surface disinfection, often used as medical alcohol. The hazards to the human body caused by improper use can be categorized into skin and mucous membrane damage, gastrointestinal hazards, respiratory hazards, neurological hazards and so on. 1. Skin and mucous membrane damage: in the use of alcohol disinfection, if inadvertently contact with the eye, the anus perineum mucous membrane and other epithelial protection ability is weak mucous membrane, may cause skin redness, swelling, pain and other hazards; such as not deep contact with the wound will cause severe pain; if contact with baby skin, may cause skin cracks, rashes and so on. 2. Gastrointestinal hazards: inadvertent accidental consumption of high concentrations of disinfectant alcohol may lead to burning sensations in the throat, esophagus, stomach and other organs, and if consumed in excess, it may even lead to alcohol poisoning and gastrointestinal tract perforation and other serious damage. 3. Respiratory hazards: excessive inhalation of alcohol aerosol in use may lead to respiratory mucosal damage, coughing, sputum, chest pain and other manifestations. 4. Systemic hazards: mainly caused by alcohol poisoning, depending on the dose of poisoning, may lead to consciousness disorders, loss of mobility, vomiting, urinary incontinence and other hazards. It is recommended to go to the hospital in time when the above poisoning symptoms occur; for daily use of alcohol disinfection, it is recommended to use it in a ventilated environment, away from fire sources and avoid children’s contact.