Abstract: “Snake-locking” in Xiangxi is one of the surviving stunts in Chenzhou Residence,and is a defensive white witchcraft.However,it can be turned into an offensive and fatal black witchcraft,thus it is a combination of black and white witchcraft.“Snake-locking” contains the scientific and technologic element of medicine.The isolated geography and the deep witch culture gives birth to this black and white witchcraft and keeps it to grow.

Key words: snake-locking, black witchcraft, white witchcraft, element of science and technology