The invention discloses a novel unloading crane pipe with an oil-immersed pump and belongs to the technical field of crane pipes. The novel unloading crane pipe comprises a hydraulic oil storage tank, a vane pump, a negative-pressure oil delivery pipe, a positive-pressure oil delivery pipe, a pneumatic hoist, a vertical pipe, the oil-immersed pump, a supporting frame module, a rotary arm module, a gaseous phase pipe, an oil outlet pipe, an oil inlet pipe, a sleeve, an oil outlet, a telescopic pipe and a seal cover, wherein the supporting frame module comprises a first bent pipe, an inner arm, a second bent pipe, a second rotary connector, a second pneumatic motor, an outer arm, a rotary frame, a rotary rod and a hydraulic cylinder. The novel unloading crane pipe has sealing effect during oil unloading, ensures the safety of volatile toxic liquid during unloading and avoids the phenomenon that an operator is possibly burned by acid. Positive-pressure oil unloading is adopted, so that air resistance and cavitation phenomena of the crane pipe do not exist, oil unloading speed is improved, and the liquid level in a tank truck can be accurately measured.