The invention provides a PICC postoperative monitoring system, which comprises an environment temperature monitoring module, a bandage pressure sensing module, a catheter position monitoring module, adressing adhesion force monitoring module, a patient skin state monitoring module, an infusion joint fixing state monitoring module, an information comprehensive evaluation module and a sending module, wherein the environment temperature monitoring module is used for monitoring the temperature and generating a first message on the basis of the temperature; the bandage pressure sensing module is used for monitoring the bandage pressure and generating a second message on the basis of the bandage pressure; the catheter position monitoring module is used for monitoring the position of a catheterand generating a third message on the basis of the position of the catheter; the dressing adhesion force monitoring module is used for monitoring the adhesion force between the dressing and the skin of a patient and generating a fourth message on the basis of the adhesion force; the patient skin state monitoring module is used for monitoring the skin state of the patient and generating a third message according to the skin state of the patient;; the infusion joint fixing state monitoring module is used for monitoring the fixing state of an infusion joint, and generating a sixth message on thebasis of the fixing state; the information comprehensive evaluation module is used for collecting each message and generating the PICC postoperative state information on the basis of the message; andthe sending module is used for sending the PICC postoperative state information to a user terminal of medical personnel.