With the continuous development of technology and improvement of surgical techniques, the time that patients need to be hospitalized after artificial hip replacement is greatly reduced, and many post-operative rehabilitation training and care are gradually transferred to be completed at home. However, patients are often hesitant to seek medical help because they are not professionals and they are afraid that they will have a big problem if they do not seek medical help, but they are afraid that it will be a false alarm. In fact, if a patient has the following symptoms, he or she needs to seek immediate medical attention: 1. dislocation of the hip joint. You should know that even if it has been many years since the artificial hip replacement, the hip joint may be dislocated due to improper posture or trauma. If you find that the wound is red and starts to flow pus and water after surgery, then you should highly suspect infection and need to seek immediate medical attention; 3.Persistent pain after surgery. Patients can feel pain all the time after surgery, even if the pain increases, it is also necessary to seek medical attention promptly.