Waterproof structure and flying dust monitoring device

The utility model discloses a waterproof structure and a flying dust monitoring device. The waterproof structure comprises a monitoring box body which is provided with a box surface; the cover plate is arranged on the box surface, and a drainage gap is formed between the cover plate and the box surface; the wire passing tower is arranged on the cover plate and comprises a tower pipe, a tower base and a tower cover, the tower pipe is communicated with the drainage gap, the tower base is arranged at one end of the tower pipe, the tower cover covers the tower base, a ventilation gap is formed between the tower cover and the tower base, a through hole and a second flange are further arranged on the box surface, and the through hole is communicated with an inner cavity of the monitoring box body. The ventilation gap is communicated with the inner cavity of the monitoring box body through the tower pipe and the through hole, the second flange surrounds the through hole, and the edge of the second flange is higher t