A blood lancet device comprising a housing having one end formed as an opening a sliding sleeve having one end extending from the opening to the outside of the housing a blood lancet including a needle body and a needle tip arranged at one end of the needle body, the sliding sleeve being bushed at the outside of the housing, said blood lancet adapted to move relative to the sliding sleeve so as to expose the needle tip at the opening and a biasing member having one end securely fixed with another end of needle body.
