The bruises on the legs may be caused by the patient’s bruises, which may be due to the bleeding of the capillaries under the skin. This is normal and the patient is advised not to worry too much, and can usually apply heat to the area to speed up the bruising. In addition, if the patient has multiple bruises without obvious trauma, it may be due to abnormal blood clotting in the patient’s body. This is mainly due to abnormalities in the five blood clotting items or low platelet count, resulting in bleeding and bleeding, so it is important to go to the hospital for relevant tests, such as blood tests for the five blood clotting items or platelet count, to clarify the diagnosis. If it is due to the above two conditions, it is recommended that the patient must make timely adjustments to avoid trauma or continued use of medication that may lead to abnormalities in coagulation function.