Low-temperature atmospheric plasma generating unit

The utility model provides a low-temperature atmospheric plasma generating unit, which mainly comprises a cylindrical base, a flow guide block, an electrode and a front sleeve, wherein the cylindrical base is of an insulated concave body, a full-open hole is arranged at the front of the cylindrical base and an air inlet duct is arranged on the side of the cylindrical base; the flow guide block is placed in the concave space of the cylindrical base to enable the inlet air to generate rotating air flow; the electrode is an elongated body made of conducting materials, the rear part of the electrode can be inserted into the flow guide block in an abutting way, and the front part protrudes the edge of the cylindrical base; and the front sleeve is made of metallic materials and arranged at the front of the cylindrical base, the internal part of the front sleeve corresponds to the tip of the electrode to form a single air chamber, a nozzle is outward arranged at the other end of the air chamber to blow out air to ge