There is always stasis of blood in the body may be a disorder of the body’s coagulation function, it is recommended to test the prothrombin time and various indicators, including platelet count, prothrombin time, etc. Patients should clarify whether they have a family history of bleeding or thromboembolism and whether they have a tendency to bleed. Frequent subcutaneous petechiae may be due to vitamin K deficiency or hematologic disorders, such as the presence of submucosal bleeding spots suspected to be purpura, and may be due to hypersplenism. If the patient takes NSAIDs, such as aspirin and clopidogrel, they can cause bleeding tendencies and lower platelets. Therefore, frequent subcutaneous petechial hemorrhage should be given enough attention and promptly checked in the hospital to prevent any trauma or other surgical stressful situations causing danger.