Drug delivery device for medical oncology and use method of drug delivery device

The invention relates to the technical field of esophageal injection, and discloses a medical oncology drug delivery device and a use method thereof.The medical oncology drug delivery device comprises a deep treatment bin penetrating into the body and a control handle installed at the far end of the deep treatment bin and connected with the deep treatment bin through a pipeline; the side face of the deep treatment bin is rotationally connected with an adjusting pipe used for guiding the injection direction, and angle adjusting mechanisms used for being matched with the control handle to control rotation are installed on the two sides of the adjusting pipe. When the deep treatment bin is inserted into the oral cavity, the external control handle is matched with the adjusting wheel set to drive the angle of the adjusting pipe on the side face of the deep treatment bin to change, the whole adjusting process is simple and convenient, and the injection head is very convenient to control during inclined injection a