The utility model relates to an electric-/manual-winding discharge suction unit and belongs to intermediate receiving devices for ground discharging of railway passenger train waste collectors. The electric-/manual-winding discharge suction unit comprises a discharge hose, a quick connector, a hose winding mechanism, a guide wheel mechanism, an automatic control device and a unit box. One end of the discharge hose is connected with the quick connector; the other end of the discharge hose penetrates the guide wheel mechanism and is connected with one end of a discharge pipe provided in an inner cylinder of a reel of the hose winding mechanism; the discharge hose is guided out or recycled through the guide wheel mechanism. The hose winding mechanism is connected with the automatic control device through a circuit. The hose winding mechanism, the guide wheel mechanism and the automatic control device are all mounted in the unit box. The electric-/manual-winding discharge suction unit has the advantages that the discharge hose can be manually pulled out or electrically or manually recycled; if both a manual switch and a limit switch fail, an emergency stop button can be pressed to stop a motor; a hose compressing device allows the hose to be compactly and orderly wound; the electric-/manual-winding discharge suction unit can run reliably, is simple to operate and maintain and is applicable to use with a fixed vacuum discharge system.