There are many reasons for pressing pain 5 months after hip replacement surgery, such as infection, lymphatic reflux obstruction, loosening of prosthesis and so on. 1. Infection: Infection may occur for some reasons, leading to the manifestation of pressing pain 5 months after hip replacement surgery. It is necessary to go to the hospital for examination, and if there is any infection, clear the wound in time. 2. Lymphatic reflux obstacle: it may be due to the damage of soft tissues and small lymphatic vessels caused by the surgery, which affects the reflux of tissue fluid, thus causing the manifestation of pressing pain 5 months after hip replacement surgery. 3. Loosening of the prosthesis: some patients may loose the prosthesis and compress the local tissues, which may lead to pain in pressure 5 months after hip replacement surgery, and it is recommended to review the situation. There are many other reasons that can lead to pain in pressure 5 months after hip replacement surgery, it is recommended that such patients go to regular hospitals, consult with professional doctors, complete the relevant examinations, and identify the causes, so as to avoid blind treatment.