The invention discloses a pericardium thoracic cavity puncture and hydrops drainage device for cardiology department. The pericardium thoracocentesis and hydrops drainage device comprises a positioning fixing device, a movable puncture device, a negative-pressure drainage device, a medicine feeding device, a controller and a bracket; a puncture assembly is fixed and positioned through a fixing clamp and an arc-shaped angle ruler; an infrared generator is used for guiding medical personnel to adjust the angle, so that the puncture accuracy is guaranteed; the controller is indirectly manipulated through a wireless remote controller and doctors can more conveniently operate; in a drainage process, once if a puncture needle enters a pericardium, a driving button can be turned off; a rebound device is composed of a first rubber block, a second rubber block, damping springs and ear stopping blocks, and is used for rapidly rebounding, so that danger of puncturing the heart by a needle core is avoided; hydrops in a drainage pipe can be rapidly cleaned by arranging a cleaning pipe valve, and the hydrops is prevented from reflowing in an infusion process. Totally, the pericardium thoracic cavity puncture and hydrops drainage device is accurate in positioning and simple in operation; time and labor are saved and the working load of the medical personnel is greatly alleviated.