Why do different problems occur in the application of PICC catheters with the same placement method, the same disease, and the same age group? Different times of application? Some patients are successfully extubated after the treatment is completed without any complications during the period with the catheter. Some of them have been placed for a short period of time and either this or that problem occurs, or they are even disconnected midway because of complications. The care of PICC catheter in Air Force General Hospital Hematology Research Center Qiao Aizhen is crucial, especially after taking the tube home, without the supervision of medical personnel, our patients are prone to problems if they lack the knowledge in this area, in response to this situation we created the Air Force General Hospital “PICC health guidance and functional exercise” CD-ROM, hope that our patients carefully watch and learn to observe, learn to care, learn to We hope that our patients will watch and learn, learn to observe, learn to care, learn to handle emergency situations, learn to bathe and exercise with PICC catheter, avoid complications, and let us join hands to protect this lifeline – PICC catheter.