The penultimate line of the WHO logo explains that the "snake emblem" originated from the story of Ascui Lebo, a Chinese medicine god in ancient Greek legend. According to legend, he often walks around with a snake stick in his hand, and later generations take "snake around crutches" as a medical symbol.
There are several theories about the origin of this snake emblem.
1, according to legend, there was a famous doctor named Askleber. He is a serious, gentle and kind doctor. He traveled around the world with a wand wrapped in a snake in his hand, saving lives.
2. Long before the story of Dr. Ascui Rabo spread, there was an incident about13rd century BC: Israeli villagers were bitten by salamanders, and many people died. God wanted to heal his people, so the Lord said to Moses, "Make a burning snake and hang it on a pole. Anyone who has been bitten by a snake will be fine at a glance. "
Moses made a bronze snake and hung it on a post. All the villagers who were bitten by snakes really recovered at first sight. They don't need to beg, spend money or work hard. Just look up at the copper snake on the wood and miraculously survive from the dying terminal illness. This snake stick in the Old Testament is a sign that Jesus was hanged on the cross.
Reference Baidu Encyclopedia-Snake Emblem