Air sampling instrument with filtering structure

The utility model discloses an air sampling instrument with a filtering structure. The air sampling instrument comprises a tripod and an instrument main body, the instrument main body is arranged at the upper end of the tripod; the air pump is arranged on the upper surface of the instrument main body; the first connecting pipe is connected to the upper end of the air pump; the pre-storage tank is connected to the tail end of the first connecting pipe; and the communicating pipe is arranged in the pre-storage tank. According to the air sampling instrument with the filtering structure, the first filtering net in a net opening shape is arranged in the filtering head, dust impurities in air can be filtered out, pollution caused by the fact that the dust impurities are sucked into a sampling bottle solution is avoided, and moisture in the air can be dried and filtered out through the second filtering net; the influence on the subsequent air detection numerical value caused by the change of the solution concentrati