The invention relates to an environment friendly dedusting type loading trough used for bulk materials, which is a mechanical device. The environment friendly dedusting type loading trough comprise a loading station bracket, a storage bin, an extendable trough, and an enclosure sleeve; wherein the storage bin is arranged on the loading station bracket; the extendable trough is arranged on a discharge hole of the storage bin; the enclosure sleeve is fixedly arranged on the loading station bracket and encloses the discharge hole of the storage bin; the upper end of the enclosure sleeve is closed and provided with a ventilation opening which is connected with a dust collection pipeline; the dust collection pipeline is connected with a collected dust and fine dust separating device; the lower end of the enclosure sleeve is connected with an extendable sleeve which encloses the trough; and the lower end of the extendable sleeve is connected with a front opening of the extendable sleeve. In the invention, a dust cover equipped with a dust collection device is arranged on the loading trough of an automatic loading station, then dust separated during bulk materials loading is limited at the dust cover and discharged through the dust collection device, and purified air which is dedusted is injected into the atmosphere; thus, air pollution is reduced to the maximum.