The invention provides suction type pneumatic conveying equipment. The suction type pneumatic conveying equipment comprises a storage cylinder, a conveying pipe, a gas pipe, a fan and a separating cylinder; the separating cylinder is embedded and welded in the top of the storage cylinder; the conveying pipe is embedded and welded in one side of the separating cylinder; the gas pipe is embedded andwelded in the other side of the conveying pipe; one end of the gas pipe is embedded and welded in the fan; a discharge pipe is embedded and welded in the bottom of the storage cylinder; the bottom ofthe discharge pipe is sleeved with a screw cap in a threaded mode; one side of the conveying pipe is welded to the storage cylinder through a support rod; a carrier plate is welded to the top of theseparating cylinder; and a motor is welded to the top of the carrier plate. A separating pipe is driven by a disc to rotate at a high speed, in the movement process of the separating pipe, due to rotation of the separating pipe, the separating pipe can lay down materials in the separating pipe before the materials fall off from the separating pipe, so that the materials fall into the separating cylinder, the materials are completely separated from airflow, and thus the materials can be completely separated from airflow just through one time of separating.