Ants are poisonous. The main danger of ants to human body is that after contact with skin and mucous membranes, irritation may occur, such as conjunctivitis, edema of the skin, edema of the eyelids, rhinitis, bronchitis and so on. Severe gastrointestinal symptoms, such as nausea, vomiting, diarrhea, and gastrointestinal bleeding, may occur. Toxic ants can cause kidney failure and respiratory failure in humans. In clinical practice, the damage caused by ants varies from one ant to another. Not only can ants cause harm to the body, they can also be used in medicine. It can treat rheumatic arthritis and respiratory diseases, and it is also effective in strengthening the body and nourishing the yin and yang, as well as treating impotence in men and sexual frigidity in women.