Eating propolis is beneficial to the human body, but there are some side effects outside the therapeutic range, the more common are the following: the first point is lead poisoning, which mainly lies in the formation of propolis in the process of lead contamination, consuming too much, there is a risk of lead poisoning, lead accumulation in the body and some other situations. The second point is to reduce the digestive function, this is because there are many antibacterial components in propolis, which can regulate the intestinal flora, especially for some beneficial bacteria have a certain effect on killing, reducing the digestive function of the human body. The third point is that eating propolis can cause allergies, the reason is very complicated, mainly because everyone’s constitution is different, especially for some allergic patients, more likely to appear. The fourth point is asthma, this lies in the patient itself may have a history of asthma, eating propolis easily induced.