If there is subcutaneous bleeding due to trauma or bruising and it has been more than a year, these are already hyperpigmentation and not subcutaneous bruising. If you want to deal with it, you can choose physical therapy methods, such as ultrasonic therapy, microwave therapy, infrared therapy, etc., to see if these hyperpigmentation can be faded as well as eliminated. If the above conservative treatment is not effective, to remove these bruises, you can also choose to use the surgical treatment method, which is to give local bruises to the skin removal, and then suture the wound, it will be able to completely solve the bruising situation. However, if there is no obvious impact on the appearance, it is recommended that surgical treatment is not needed.