The invention discloses a haze detection and coarse filtration negative-oxygen treatment device remotely controlled by Internet of Things. The haze detection and coarse filtration negative-oxygen treatment device comprises a base and a bearing box body, wherein the bearing box body is made of insulation plastic; an intelligent detection system and an Internet of Things communication unit are mounted at the top of the bearing box body; a negative ion generation device is fixedly mounted in the bearing box body; the device also comprises a filtering device; the filtering device comprises a plurality of filtering nets; the filtering nets are successively arranged between two sides of the bearing box body; air inlets and air outlets are formed in the two sides of the bearing box body respectively; a detection probe is arranged, so that the content of haze can be conveniently detected and calculated, and the detection accuracy of the device is improved; meanwhile, the device is also provided with the Internet of Things communication unit; Internet of Things communication unit is wirelessly connected with remote intelligent equipment and is used for obtaining parameters; the remote monitoring operation is achieved; the coarse particles are filtered firstly through the coarse filtration effect; the negative ion generation device is arranged and is capable of releasing a large quantityof negative oxygen ions. The haze detection and coarse filtration negative-oxygen treatment device is capable of monitoring, purifying and absorbing indoor haze and has automatic feedback adjustmentand remote monitoring functions.