Brain tissue locating and taking device

The utility model discloses a brain tissue locating and taking device which mainly consists of a needle cylinder, a push rod embedded at the rear end of the needle cylinder, and a needle tube connected with the front end of the needle cylinder, wherein a wedge-shaped cutting edge is arranged on a needle point of the needle tube; a metal wire is embedded and sleeved in an inner cavity of the needle tube; one end of the metal wire is fixed on the push rod; the other end of the metal wire is fixed on the cutting edge of the needle point; the edge of a deformable coating film sheet is connected with the metal wire and the edge at one side of the cutting edge respectively; and the coating film sheet can completely cover a gap surrounded by the metal wire and the edge of the cutting edge. The brain tissue locating and taking device has the characteristics that the tissue sampling amount is stable and the surrounding tissues of a sample point cannot be destroyed.