An endoscopic surgery device that can easily acquire an image desired by a surgeon, and that has high operability. The endoscopic surgery device includes: an outer tube body that penetrates through a body wall to be inserted into a body cavity an endoscope insertion path that is provided inside the outer tube body a treatment tool insertion path that is provided inside the outer tube body an endoscope drive unit that has a non-operating area where an endoscope insertion part inserted into the endoscope insertion path is not moved, and an operating area where the endoscope insertion part is moved a position sensor that detects a movement amount of treatment tool insertion part with respect to the outer tube body and a control unit that controls the endoscope drive unit in accordance with the movement amount of the treatment tool insertion part, detected by the position sensor.
