The invention provides a weight-reducing automatic-discharging traditional Chinese medicine drying machine which comprises an outer frame body, an elastic force mechanism, an exhaust fan, a steam discharging pipe, a tray trolley, an outlet guide rail plate, a drying device, a control panel and an inlet guide rail plate, wherein the elastic force mechanism is arranged in the outer frame body; the exhaust fan is arranged at the top of the outer frame body; the steam discharging pipe is connected with the outer frame body through the exhaust fan; the drying device is arranged at the bottom of theinner side of the outer frame body; the control panel is arranged on one side of the outer frame body; the outer frame body comprises an outer housing, an inlet baffle plate and an outlet baffle plate; a feeding hole is formed in one side of the outer frame body; a discharging hole is formed in the other side of the outer frame body; a first turning pin is arranged on the feeding hole; a second turning pin is arranged on the discharging hole; the inlet baffle plate is mounted on the feeding hole through the first turning pin; and the outlet baffle plate is mounted on the discharging hole through the second turning pin. The weight-reducing automatic-discharging traditional Chinese medicine drying machine can carry out production precisely, is high in safety performance, has the energy-saving function and facilitates popularization.