Nucleic acid sampler with protection function

The utility model discloses a nucleic acid sampler with a protection function, which relates to the technical field of samplers with protection functions and comprises a nucleic acid collector mechanism, the nucleic acid collector mechanism comprises a protection collector, and a top cover head is movably mounted at the top end of the protection collector. A nucleic acid storage test tube is arranged on the outer surface of the protective collector, and a test tube clamping soft head is fixedly connected to the outer surface of the top end of the top cover head. The air purifier is matched with the exhaust fan to absorb air, is matched with the air inlet fine holes to absorb outside air into the protective shell, enables the air to flow along with the air guide channel, is matched with the filter to filter and cool the air, and then exhausts the inside air through the top end of the protective shell. As the air is continuously discharged, when the cotton swabs are pulled out, the situation that external air e