Semi-automatic safety protection needling instrument

The utility model discloses a semi-automatic safety protection needling instrument. Wherein the safety sleeve is provided with a sleeve upper inlet and outlet and a sleeve lower inlet and outlet, theneedle cylinder is provided with a needle cylinder combination portion and a needle cylinder liquid outlet, the automatic combination integral device comprises an integral terminal force storage portion, and the sleeve upper end limiting portion and the needle cylinder upper end limiting portion are combined with each other. Therefore, the elasticity of the whole device is automatically combined;the assembly and operation strength requirements of the needle cylinder and the safety sleeve are reduced; and the elastic potential energy is accumulated by abutting against the outer wall of the needle cylinder, so that when the safety sleeve moves to a combination fixed point, the automatic combination integral device automatically releases the accumulated potential energy to be permanently fixed, the safety sleeve is p