Bruising on the feet may be caused by subcutaneous ecchymosis, blood-related diseases, etc. The details are as follows: 1, subcutaneous ecchymosis: usually caused by subcutaneous ecchymosis or subcutaneous hemorrhage, the vast majority of such cases are still due to inadvertent trauma, or traumatic injuries resulting in subcutaneous hemorrhage. This kind of bleeding in the case of loose subcutaneous tissue, it is easy to accumulate underneath, usually there is no great impact, rely on their own absorption, there is no additional way to speed up, the important thing is to try to avoid re-traumatization. 2, blood-related diseases: there are some may be because of blood-related diseases, platelet lowering and so on, resulting in low platelets or platelet function is not good, a little bit of touching or there may be Bleeding on its own, so generally there is no big problem, if necessary, go to the general surgery, hematology, check blood routine and physical examination, to comprehensively assess the related problems.