Sterilization system and activity detection mechanism

The utility model discloses a sterilization system and activity detection mechanism, which comprises a base frame and a circulation structure, the base frame is provided with an activity meter, and the circulation structure is arranged on the base frame; the circulation structure comprises a pipe assembly and a first driving part, the pipe assembly is provided with a circulation channel suitable for circulation of a gaseous medium, the pipe assembly is provided with a circulation inlet and a circulation outlet, the pipe assembly is provided with a first position enabling the circulation outlet to be close to a first port of the activity meter, and the circulation inlet of the pipe assembly is suitable for being communicated with a second port of the activity meter. The first drive member is mounted on the tube assembly. According to the sterilization system of the structure, circulation power is provided through the first driving piece, the circulation inlet sucks gas at the second port of the activity meter