Abstract
Snake venom is one of the most lethal saliva toxins in the world. It consists of more than 20 distinct compounds, mainly of which are proteins， peptides or polypeptides. Proteins are responsible for 90%-95% of snake venom’s dry weight and are capable of some biological uses. The venom facilitates digestion and immobilization of prey and can help the snake to resist threats as well. Snake bites can easily kill a human or any other animal species. There are multiple sorts of snake venom with different toxicity abilities, causing various physiological effects. While snake venom is considered as a highly risky toxin, it still can be used to benefit human beings. For example, in the biomedical area, specific snake venom can treat serval diseases and even has a cosmetic effect. This article will solve the question that how snake venom can be lethal and beneficial at the same time, and how it be used to contribute to biological resources.
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